BRW said Rinehart, who has topped the magazine’s Australian Rich 200 List for the second year running, had surpassed Forbes' calculation of $26 billion for reigning global queen Christy Walton, the widow of John Walton and holder of a major stake in US retail giant Wal-Mart.
Walton has held the top spot on Forbes' list for the past seven years.
The mining magnate has grown her wealth by an unparalleled $18.8 billion this year even as the acrimonious feud with her three eldest children continues to play out in court.
Walton has held the top spot on Forbes' list for the past seven years.
The mining magnate has grown her wealth by an unparalleled $18.8 billion this year even as the acrimonious feud with her three eldest children continues to play out in court.