How do I secure funding before buying a foreclosure at auction?

[Dallin Dragon]

To buy a foreclosure at auction I need to have the full amount of cash within 24 hours of getting the house at auction (that’s after paying $20k at the auction). I’ll go to auctions with specific houses in mind that I’ve scouted beforehand, but I‘m confused on how I can secure the funds with a private money lender before I even know the purchase price of the house or even which of my pre-chosen houses I’ll get or WHEN I will even be successful at auction.