Finding the Fourth Proportional to 90,158.31, 134,649.24 and 76,687.74

Step by Step Solution

1. Step 1: Write the proportion equation
   90,158.31 : 134,649.24 = 76,687.74 : x
2. Step 2: Convert to fraction form
   90,158.31/134,649.24 = 76,687.74/x
3. Step 3: Cross multiply
   90,158.31x = 134,649.24 × 76,687.74
4. Step 4: Simplify right side
   90,158.31x = 10,325,945,908.32
5. Step 5: Solve for x
   x = 10,325,945,908.32/90,158.31
6. Step 6: Final answer
   x = 114,531.27