Finding the Fourth Proportional to 158,496.60, 218,730.72 and 86,876.61

Step by Step Solution

1. Step 1: Write the proportion equation
   158,496.60 : 218,730.72 = 86,876.61 : x
2. Step 2: Convert to fraction form
   158,496.60/218,730.72 = 86,876.61/x
3. Step 3: Cross multiply
   158,496.60x = 218,730.72 × 86,876.61
4. Step 4: Simplify right side
   158,496.60x = 19,002,583,456.46
5. Step 5: Solve for x
   x = 19,002,583,456.46/158,496.60
6. Step 6: Final answer
   x = 119,892.69