Finding the Fourth Proportional to 56,651.50, 78,180.98 and 31,158.94

Step by Step Solution

1. Step 1: Write the proportion equation
   56,651.50 : 78,180.98 = 31,158.94 : x
2. Step 2: Convert to fraction form
   56,651.50/78,180.98 = 31,158.94/x
3. Step 3: Cross multiply
   56,651.50x = 78,180.98 × 31,158.94
4. Step 4: Simplify right side
   56,651.50x = 2,436,036,479.79
5. Step 5: Solve for x
   x = 2,436,036,479.79/56,651.50
6. Step 6: Final answer
   x = 43,000.39