Fiserv, a leading provider of systems for the mortgage industry, reported very strong earnings growth for both the fourth quarter and the entire past year. For the three-month period ended December 31, 2004, Fiserv processing and services revenues were $866.1 million, a 20 percent increase over the $720.8 million for the fourth quarter of 2003. Net income per share-diluted for the fourth quarter of 2004 was $0.49 per share, compared to $0.42 per share for…