Finding the Fourth Proportional to 158,992.48, 219,414.72 and 87,379.12

Step by Step Solution

1. Step 1: Write the proportion equation
   158,992.48 : 219,414.72 = 87,379.12 : x
2. Step 2: Convert to fraction form
   158,992.48/219,414.72 = 87,379.12/x
3. Step 3: Cross multiply
   158,992.48x = 219,414.72 × 87,379.12
4. Step 4: Simplify right side
   158,992.48x = 19,172,265,148.65
5. Step 5: Solve for x
   x = 19,172,265,148.65/158,992.48
6. Step 6: Final answer
   x = 120,585.99