Finding the Fourth Proportional to 56,651.05, 78,180.61 and 31,158.61

Step by Step Solution

1. Step 1: Write the proportion equation
   56,651.05 : 78,180.61 = 31,158.61 : x
2. Step 2: Convert to fraction form
   56,651.05/78,180.61 = 31,158.61/x
3. Step 3: Cross multiply
   56,651.05x = 78,180.61 × 31,158.61
4. Step 4: Simplify right side
   56,651.05x = 2,435,998,921.63
5. Step 5: Solve for x
   x = 2,435,998,921.63/56,651.05
6. Step 6: Final answer
   x = 43,000.06