Finding the Fourth Proportional to 31,081.88, 42,893 and 16,934.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.88 : 42,893 = 16,934.72 : x
2. Step 2: Convert to fraction form
   31,081.88/42,893 = 16,934.72/x
3. Step 3: Cross multiply
   31,081.88x = 42,893 × 16,934.72
4. Step 4: Simplify right side
   31,081.88x = 726,380,944.96
5. Step 5: Solve for x
   x = 726,380,944.96/31,081.88
6. Step 6: Final answer
   x = 23,369.92