Finding the Fourth Proportional to 31,081.98, 42,893.16 and 16,934.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.98 : 42,893.16 = 16,934.86 : x
2. Step 2: Convert to fraction form
   31,081.98/42,893.16 = 16,934.86/x
3. Step 3: Cross multiply
   31,081.98x = 42,893.16 × 16,934.86
4. Step 4: Simplify right side
   31,081.98x = 726,389,659.56
5. Step 5: Solve for x
   x = 726,389,659.56/31,081.98
6. Step 6: Final answer
   x = 23,370.12