Finding the Fourth Proportional to 158,491.49, 218,740.68 and 98,081.61

Step by Step Solution

1. Step 1: Write the proportion equation
   158,491.49 : 218,740.68 = 98,081.61 : x
2. Step 2: Convert to fraction form
   158,491.49/218,740.68 = 98,081.61/x
3. Step 3: Cross multiply
   158,491.49x = 218,740.68 × 98,081.61
4. Step 4: Simplify right side
   158,491.49x = 21,454,438,066.89
5. Step 5: Solve for x
   x = 21,454,438,066.89/158,491.49
6. Step 6: Final answer
   x = 135,366.50