South African billionaire replaces Dangote as Africa's richest man South African Johann Rupert has displaced Nigerian billionaire businessman Aliko Dangote to become Africa’s richest man, Forbes Magazine said. Rupert’s net worth is currently $12 billion according to Forbes Real-time Global Billionaires Ranking, while Dangote trails behind him with a net worth of $10.8 billion as of Friday. Dangote’s net worth dropped due to the recent operational charges on the foreign exchange market carried out by the Central Bank of Nigeria, which led to the depreciation of the Naira against the US dollar. Consequently,...