SAN FRANCISCO--(BUSINESS WIRE)--McKesson Corporation (NYSE:MCK) today reported that revenues for the fourth quarter ended March 31, 2008 were $26.2 billion compared to $24.2 billion a year ago. Fourth-quarter earnings per diluted share was $1.05 compared to 85 cents per diluted share a year ago. Fourth-quarter earnings per diluted share from continuing operations was $1.04 compared to 85 cents a year ago.