Finding the Fourth Proportional to 158,500.61, 218,753.25 and 98,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   158,500.61 : 218,753.25 = 98,090.72 : x
2. Step 2: Convert to fraction form
   158,500.61/218,753.25 = 98,090.72/x
3. Step 3: Cross multiply
   158,500.61x = 218,753.25 × 98,090.72
4. Step 4: Simplify right side
   158,500.61x = 21,457,663,794.84
5. Step 5: Solve for x
   x = 21,457,663,794.84/158,500.61
6. Step 6: Final answer
   x = 135,379.06