Change assigned-to of Contact to match assigned-to of its parent Account?

I need to create a Process to do the following:  change the Assigned To field of any Contact wherein the Assigned To field of the Contact's parent Account does not match, to be the same User in the Assigned To of that Account.

Ex:  Joe Smith is assigned to Bob, but Joe Smith's Account ("Company") is assigned to Jill...I need to automate assigning Bob (and all others similar) to Jill.