Finding the Fourth Proportional to 158,456.71, 218,675.33 and 86,841.24

Step by Step Solution

1. Step 1: Write the proportion equation
   158,456.71 : 218,675.33 = 86,841.24 : x
2. Step 2: Convert to fraction form
   158,456.71/218,675.33 = 86,841.24/x
3. Step 3: Cross multiply
   158,456.71x = 218,675.33 × 86,841.24
4. Step 4: Simplify right side
   158,456.71x = 18,990,036,814.61
5. Step 5: Solve for x
   x = 18,990,036,814.61/158,456.71
6. Step 6: Final answer
   x = 119,843.69