Finding the Fourth Proportional to 158,456.52, 218,671.72 and 86,835

Step by Step Solution

1. Step 1: Write the proportion equation
   158,456.52 : 218,671.72 = 86,835 : x
2. Step 2: Convert to fraction form
   158,456.52/218,671.72 = 86,835/x
3. Step 3: Cross multiply
   158,456.52x = 218,671.72 × 86,835
4. Step 4: Simplify right side
   158,456.52x = 18,988,358,589.11
5. Step 5: Solve for x
   x = 18,988,358,589.11/158,456.52
6. Step 6: Final answer
   x = 119,833.24