Finding the Fourth Proportional to 91,149.74, 136,527.78 and 88,919.00

Step by Step Solution

1. Step 1: Write the proportion equation
   91,149.74 : 136,527.78 = 88,919.00 : x
2. Step 2: Convert to fraction form
   91,149.74/136,527.78 = 88,919.00/x
3. Step 3: Cross multiply
   91,149.74x = 136,527.78 × 88,919.00
4. Step 4: Simplify right side
   91,149.74x = 12,139,914,344.59
5. Step 5: Solve for x
   x = 12,139,914,344.59/91,149.74
6. Step 6: Final answer
   x = 133,186.49