Finding the Fourth Proportional to 91,892.10, 137,870.55 and 88,652.10

Step by Step Solution

1. Step 1: Write the proportion equation
   91,892.10 : 137,870.55 = 88,652.10 : x
2. Step 2: Convert to fraction form
   91,892.10/137,870.55 = 88,652.10/x
3. Step 3: Cross multiply
   91,892.10x = 137,870.55 × 88,652.10
4. Step 4: Simplify right side
   91,892.10x = 12,222,513,785.66
5. Step 5: Solve for x
   x = 12,222,513,785.66/91,892.10
6. Step 6: Final answer
   x = 133,009.41