Finding the Fourth Proportional to 158,456.88, 218,670 and 86,837.52

Step by Step Solution

1. Step 1: Write the proportion equation
   158,456.88 : 218,670 = 86,837.52 : x
2. Step 2: Convert to fraction form
   158,456.88/218,670 = 86,837.52/x
3. Step 3: Cross multiply
   158,456.88x = 218,670 × 86,837.52
4. Step 4: Simplify right side
   158,456.88x = 18,988,760,498.40
5. Step 5: Solve for x
   x = 18,988,760,498.40/158,456.88
6. Step 6: Final answer
   x = 119,835.51