Finding the Fourth Proportional to 90,156.95, 135,195.97 and 42,785.62

Step by Step Solution

1. Step 1: Write the proportion equation
   90,156.95 : 135,195.97 = 42,785.62 : x
2. Step 2: Convert to fraction form
   90,156.95/135,195.97 = 42,785.62/x
3. Step 3: Cross multiply
   90,156.95x = 135,195.97 × 42,785.62
4. Step 4: Simplify right side
   90,156.95x = 5,784,443,213.72
5. Step 5: Solve for x
   x = 5,784,443,213.72/90,156.95
6. Step 6: Final answer
   x = 64,159.70