Finding the Fourth Proportional to 31,072.56, 42,879.42 and 16,925.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.56 : 42,879.42 = 16,925.10 : x
2. Step 2: Convert to fraction form
   31,072.56/42,879.42 = 16,925.10/x
3. Step 3: Cross multiply
   31,072.56x = 42,879.42 × 16,925.10
4. Step 4: Simplify right side
   31,072.56x = 725,738,471.44
5. Step 5: Solve for x
   x = 725,738,471.44/31,072.56
6. Step 6: Final answer
   x = 23,356.25