Inflation galloped to 42-month high of 7.57 per cent for the week ended April 19 as compared to 7.33 per cent a week ago mainly on account of higher prices of food articles like rice, milk, tea, vegetables and some manufactured products.The wholesale price based inflation stood at 6.07 per cent in the corresponding week a year ago. The previous high of 7.76 per cent was recorded for the week ended November 2, 2004.