Finding the Fourth Proportional to 123,756.76, 185,605.32 and 57,132.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,756.76 : 185,605.32 = 57,132.88 : x
2. Step 2: Convert to fraction form
   123,756.76/185,605.32 = 57,132.88/x
3. Step 3: Cross multiply
   123,756.76x = 185,605.32 × 57,132.88
4. Step 4: Simplify right side
   123,756.76x = 10,604,166,474.92
5. Step 5: Solve for x
   x = 10,604,166,474.92/123,756.76
6. Step 6: Final answer
   x = 85,685.55