Finding the Fourth Proportional to 56,635.30, 78,149.88 and 31,137.46

Step by Step Solution

1. Step 1: Write the proportion equation
   56,635.30 : 78,149.88 = 31,137.46 : x
2. Step 2: Convert to fraction form
   56,635.30/78,149.88 = 31,137.46/x
3. Step 3: Cross multiply
   56,635.30x = 78,149.88 × 31,137.46
4. Step 4: Simplify right side
   56,635.30x = 2,433,388,762.50
5. Step 5: Solve for x
   x = 2,433,388,762.50/56,635.30
6. Step 6: Final answer
   x = 42,965.94