There are 113.4 grams in a quarter pound.
To arrive at this answer, you can use the fact that there are 16 ounces in a pound, and divide a pound into four equal parts to get a quarter pound. So, one quarter of 16 ounces is 4 ounces.
Then, you can convert ounces to grams by multiplying the number of ounces by 28.35 (the conversion factor). So, 4 ounces x 28.35 = 113.4 grams.