Finding the Fourth Proportional to 92,375.52, 138,474.18 and 42,489.78

Step by Step Solution

1. Step 1: Write the proportion equation
   92,375.52 : 138,474.18 = 42,489.78 : x
2. Step 2: Convert to fraction form
   92,375.52/138,474.18 = 42,489.78/x
3. Step 3: Cross multiply
   92,375.52x = 138,474.18 × 42,489.78
4. Step 4: Simplify right side
   92,375.52x = 5,883,737,443.88
5. Step 5: Solve for x
   x = 5,883,737,443.88/92,375.52
6. Step 6: Final answer
   x = 63,693.69