BEIJING, April 19 (Reuters) - Foreign investment flows into China totaled 301.7 billion yuan ($41.66 billion) in the January-March period, down 26.1% from the same period last year, data from the Chinese commerce ministry showed on Friday. ($1 = 7.2417 Chinese yuan renminbi) (Reporting by Ella Cao and Ryan Woo Editing by David Goodman )