Finding the Fourth Proportional to 56,642.52, 78,168.68 and 31,150.83

Step by Step Solution

1. Step 1: Write the proportion equation
   56,642.52 : 78,168.68 = 31,150.83 : x
2. Step 2: Convert to fraction form
   56,642.52/78,168.68 = 31,150.83/x
3. Step 3: Cross multiply
   56,642.52x = 78,168.68 × 31,150.83
4. Step 4: Simplify right side
   56,642.52x = 2,435,019,262.00
5. Step 5: Solve for x
   x = 2,435,019,262.00/56,642.52
6. Step 6: Final answer
   x = 42,989.25