De Villiers smashed 91 runs and put together a 122-run partnership with David Miller.
Aaron Finch top scored with 109 as Australia posted 329/5 in the 3rd ODI against the Proteas in Canberra.
Haroon Lorgat said the campaign represents the true image of cricket in South Africa.
Proteas test captain Hashim Amla says the player has been struggling with a hamstring injury.
South Africa sailed into the semi-finals with a three-run victory over former champions England.
Proteas Test captain Graeme Smith will retire after the current Test series against Australia.