Finding the Fourth Proportional to 56,651.32, 78,177.25 and 31,157.69

Step by Step Solution

1. Step 1: Write the proportion equation
   56,651.32 : 78,177.25 = 31,157.69 : x
2. Step 2: Convert to fraction form
   56,651.32/78,177.25 = 31,157.69/x
3. Step 3: Cross multiply
   56,651.32x = 78,177.25 × 31,157.69
4. Step 4: Simplify right side
   56,651.32x = 2,435,822,638.10
5. Step 5: Solve for x
   x = 2,435,822,638.10/56,651.32
6. Step 6: Final answer
   x = 42,996.75