Finding the Fourth Proportional to 107,374.56, 160,940.31 and 54,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   107,374.56 : 160,940.31 = 54,672.72 : x
2. Step 2: Convert to fraction form
   107,374.56/160,940.31 = 54,672.72/x
3. Step 3: Cross multiply
   107,374.56x = 160,940.31 × 54,672.72
4. Step 4: Simplify right side
   107,374.56x = 8,799,044,505.34
5. Step 5: Solve for x
   x = 8,799,044,505.34/107,374.56
6. Step 6: Final answer
   x = 81,947.20