Finding the Fourth Proportional to 31,092.92, 42,908.04 and 16,945.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,092.92 : 42,908.04 = 16,945.76 : x
2. Step 2: Convert to fraction form
   31,092.92/42,908.04 = 16,945.76/x
3. Step 3: Cross multiply
   31,092.92x = 42,908.04 × 16,945.76
4. Step 4: Simplify right side
   31,092.92x = 727,109,347.91
5. Step 5: Solve for x
   x = 727,109,347.91/31,092.92
6. Step 6: Final answer
   x = 23,385.05