Finding the Fourth Proportional to 31,010.88, 42,793.26 and 16,863.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,010.88 : 42,793.26 = 16,863.72 : x
2. Step 2: Convert to fraction form
   31,010.88/42,793.26 = 16,863.72/x
3. Step 3: Cross multiply
   31,010.88x = 42,793.26 × 16,863.72
4. Step 4: Simplify right side
   31,010.88x = 721,653,554.53
5. Step 5: Solve for x
   x = 721,653,554.53/31,010.88
6. Step 6: Final answer
   x = 23,270.98