An afternoon at the races

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Question from garths, a parent:

A professional gambler was betting at a horse racing afternoon.
At the end of the first race he had doubled his money.
He bet R30 on the second race and tripled the money he came with.
He bet 54 on the third race and quadrupled (4 times) the money he came with.
He bet R72 on the fourth race and lost it all. But he still had R48 left.
How much money did he take to the race track?

Garths,

If I am reading this correctly then after the third race he had 4 times the amount he came with. He bet R72 of this on the fourth race and lost it all but still had R48, so how much did he have after the third race?

Harley

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