Calisto founded Karooooo in 2001.
Oxfam revealed earlier this week that three of Nigeria's richest men are worth more than 83 million Nigerians.
The home boasts six bedrooms and seven baths.
Kenya's wealth gap is staggering.
Dangote is the founder of Dangote Group.
Hassan Allam Holding is a privately held engineering, construction, and infrastructure firm.
The $1-2 billion increase cements his position as South Africa's richest billionaire.
Sabry controls 2.3 percent of the fintech company.
Richemont is a Swiss luxury goods holding company led by South African billionaire Johann Rupert.
To support the well-being of its prospective candidates, Dangote Group has established temporary housing for 20,000 employees.