Finding the Fourth Proportional to 31,104.45, 42,924.02 and 16,957.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.45 : 42,924.02 = 16,957.31 : x
2. Step 2: Convert to fraction form
   31,104.45/42,924.02 = 16,957.31/x
3. Step 3: Cross multiply
   31,104.45x = 42,924.02 × 16,957.31
4. Step 4: Simplify right side
   31,104.45x = 727,875,614.18
5. Step 5: Solve for x
   x = 727,875,614.18/31,104.45
6. Step 6: Final answer
   x = 23,401.01