41. Whitney Kroenke Burditt

Net Worth: $2.6 billion*
Wealth Inherited From: Sam Walton (Walmart)

Whitney Kroenke Burditt, the heiress to the Walmart fortune, was born in Los Angeles, California. Her grandfather, James Walton, was a founding partner of the mega-retail store. She is the daughter of Ann Walton and Stan Kroenke, and she attended Northwestern University.

Kroenke Burditt is a movie producer living in Hollywood. She has established Playing for Change, a charity devoted to constructing schools for music and the arts across the world, particularly in economically disadvantaged areas. She serves as the executive director of the organization.