Finding the Fourth Proportional to 158,498.61, 218,750.49 and 98,088.72

Step by Step Solution

1. Step 1: Write the proportion equation
   158,498.61 : 218,750.49 = 98,088.72 : x
2. Step 2: Convert to fraction form
   158,498.61/218,750.49 = 98,088.72/x
3. Step 3: Cross multiply
   158,498.61x = 218,750.49 × 98,088.72
4. Step 4: Simplify right side
   158,498.61x = 21,456,955,563.47
5. Step 5: Solve for x
   x = 21,456,955,563.47/158,498.61
6. Step 6: Final answer
   x = 135,376.30