Finding the Fourth Proportional to 31,105.28, 42,924.20 and 16,957.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.28 : 42,924.20 = 16,957.84 : x
2. Step 2: Convert to fraction form
   31,105.28/42,924.20 = 16,957.84/x
3. Step 3: Cross multiply
   31,105.28x = 42,924.20 × 16,957.84
4. Step 4: Simplify right side
   31,105.28x = 727,901,715.73
5. Step 5: Solve for x
   x = 727,901,715.73/31,105.28
6. Step 6: Final answer
   x = 23,401.23