Finding the Fourth Proportional to 158,499.61, 218,751.87 and 98,089.72

Step by Step Solution

1. Step 1: Write the proportion equation
   158,499.61 : 218,751.87 = 98,089.72 : x
2. Step 2: Convert to fraction form
   158,499.61/218,751.87 = 98,089.72/x
3. Step 3: Cross multiply
   158,499.61x = 218,751.87 × 98,089.72
4. Step 4: Simplify right side
   158,499.61x = 21,457,309,677.78
5. Step 5: Solve for x
   x = 21,457,309,677.78/158,499.61
6. Step 6: Final answer
   x = 135,377.68