Finding the Fourth Proportional to 91,422.56, 136,134.82 and 88,059.48

Step by Step Solution

1. Step 1: Write the proportion equation
   91,422.56 : 136,134.82 = 88,059.48 : x
2. Step 2: Convert to fraction form
   91,422.56/136,134.82 = 88,059.48/x
3. Step 3: Cross multiply
   91,422.56x = 136,134.82 × 88,059.48
4. Step 4: Simplify right side
   91,422.56x = 11,987,961,459.09
5. Step 5: Solve for x
   x = 11,987,961,459.09/91,422.56
6. Step 6: Final answer
   x = 131,126.95