Finding the Fourth Proportional to 91,147.82, 136,524.90 and 88,917.08

Step by Step Solution

1. Step 1: Write the proportion equation
   91,147.82 : 136,524.90 = 88,917.08 : x
2. Step 2: Convert to fraction form
   91,147.82/136,524.90 = 88,917.08/x
3. Step 3: Cross multiply
   91,147.82x = 136,524.90 × 88,917.08
4. Step 4: Simplify right side
   91,147.82x = 12,139,395,623.98
5. Step 5: Solve for x
   x = 12,139,395,623.98/91,147.82
6. Step 6: Final answer
   x = 133,183.61