Finding the Fourth Proportional to 31,072.56, 42,878.72 and 16,925.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.56 : 42,878.72 = 16,925.36 : x
2. Step 2: Convert to fraction form
   31,072.56/42,878.72 = 16,925.36/x
3. Step 3: Cross multiply
   31,072.56x = 42,878.72 × 16,925.36
4. Step 4: Simplify right side
   31,072.56x = 725,737,772.34
5. Step 5: Solve for x
   x = 725,737,772.34/31,072.56
6. Step 6: Final answer
   x = 23,356.23