Finding the Fourth Proportional to 91,148.24, 136,525.53 and 88,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,148.24 : 136,525.53 = 88,917.50 : x
2. Step 2: Convert to fraction form
   91,148.24/136,525.53 = 88,917.50/x
3. Step 3: Cross multiply
   91,148.24x = 136,525.53 × 88,917.50
4. Step 4: Simplify right side
   91,148.24x = 12,139,509,488.53
5. Step 5: Solve for x
   x = 12,139,509,488.53/91,148.24
6. Step 6: Final answer
   x = 133,184.24