Regrettably, Sam Walton passed away on April 5, 1992, so has no personal wealth any more. To give an idea of what he had, please note that Bill Gates wasn't the number one man until Sam Walton...
Lets see... I am only a teenager and a year of life is worth 129000 and I am about 13-15 years old so I times 129000 by 14 which is the mean of 13, 14 and 15. So its 1806000 $ So I worth 1806000