I haven't heard of any wealthy supercentenarians. I suspect more of them than not grew up and lived dirt-poor like this lady who died at age 116:
Before this poor lady who was the oldest validated person in the world only for less than 4 months there was Maria who kept the world's oldest living person for about 7 years.
María Esther de Capovilla (September 14, 1889 – August 27, 2006) of Guayaquil, Ecuador, at the time of her death at age 116 years and 347 days, was recognized by Guinness World Records as the world's oldest living person. She was the last remaining documented person born in the 1880s.
Biography
Born as María Ester Heredia Lecaro in Guayaquil, María was the daughter of a colonel, and lived a life among the upper-class elite, attending social functions and art classes. She never smoked or drank hard liquor. In 1917, she married a military officer, Antonio Capovilla, who died in 1949. Antonio, an ethnic Italian, was born in Pola, Austria-Hungary (now Pula, Croatia) in 1864. He moved to Chile in 1894 and then to Ecuador in 1910. After his first wife died, he married María. They had five children, three of whom were still living at her passing (the oldest two had predeceased her): Hilda, 81; Irma, 80; and son Anibal, 78. She also had eleven grandchildren, twenty great-grandchildren, and two great-great-grandchildren. [1]
At age 100, María nearly died and was given last rites, but had been free of health problems since then. As recently as December 2005 Maria was said to be in good health and able to watch TV, read the papers and walk without the aid of a stick (though she was helped by an aide). However, she was unable physically to leave her home in the past two years, which she shared with her eldest surviving daughter, Hilda, and her son-in-law. In a media interview, María stated her dislike of the fact that women nowadays are permitted to court men, rather than the reverse.
By March 2006, María's health had declined somewhat, and she was no longer able to read the newspaper. She had also nearly stopped talking and no longer walked except when helped by two persons. Still, María was able to sit erect in her chair and fan herself, and had been doing 'fine' until she succumbed to a bout of pneumonia in the last week of August 2006.
As you see she lived a life among the upper-class elite.
Tough to say if being reach or poor has to do anything about living longer.