Finding the Fourth Proportional to 55,553.52, 76,661.88 and 31,687.86

Step by Step Solution

1. Step 1: Write the proportion equation
   55,553.52 : 76,661.88 = 31,687.86 : x
2. Step 2: Convert to fraction form
   55,553.52/76,661.88 = 31,687.86/x
3. Step 3: Cross multiply
   55,553.52x = 76,661.88 × 31,687.86
4. Step 4: Simplify right side
   55,553.52x = 2,429,250,920.78
5. Step 5: Solve for x
   x = 2,429,250,920.78/55,553.52
6. Step 6: Final answer
   x = 43,728.12