Exhibit 10.73

FOURTH AMENDMENT TO EMPLOYMENT AGREEMENT

This Fourth Amendment to Employment Agreement (the “Fourth Amendment”) is made and entered into as of September 5, 2003 by and between Kennedy-Wilson Properties, Ltd., an Illinois corporation (“The Company”) a wholly owned subsidiary of Kennedy-Wilson Inc. a Delaware corporation, having an address of 9601 Wilshire Boulevard, Suite 220, Beverly Hills, California 90210, (“Company”), and James Rosten, an individual (“Employee”).

RECITALS

WHEREAS, Company and Employee have entered into that certain Employment Agreement dated as of Jan