Finding the Fourth Proportional to 31,045.97, 42,843.98 and 16,898.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,045.97 : 42,843.98 = 16,898.91 : x
2. Step 2: Convert to fraction form
   31,045.97/42,843.98 = 16,898.91/x
3. Step 3: Cross multiply
   31,045.97x = 42,843.98 × 16,898.91
4. Step 4: Simplify right side
   31,045.97x = 724,016,604.31
5. Step 5: Solve for x
   x = 724,016,604.31/31,045.97
6. Step 6: Final answer
   x = 23,320.80