Finding the Fourth Proportional to 90,116.52, 135,147.12 and 42,717.61

Step by Step Solution

1. Step 1: Write the proportion equation
   90,116.52 : 135,147.12 = 42,717.61 : x
2. Step 2: Convert to fraction form
   90,116.52/135,147.12 = 42,717.61/x
3. Step 3: Cross multiply
   90,116.52x = 135,147.12 × 42,717.61
4. Step 4: Simplify right side
   90,116.52x = 5,773,161,973.53
5. Step 5: Solve for x
   x = 5,773,161,973.53/90,116.52
6. Step 6: Final answer
   x = 64,063.31