Finding the Fourth Proportional to 158,707.69, 219,005.91 and 87,092.31

Step by Step Solution

1. Step 1: Write the proportion equation
   158,707.69 : 219,005.91 = 87,092.31 : x
2. Step 2: Convert to fraction form
   158,707.69/219,005.91 = 87,092.31/x
3. Step 3: Cross multiply
   158,707.69x = 219,005.91 × 87,092.31
4. Step 4: Simplify right side
   158,707.69x = 19,073,731,426.82
5. Step 5: Solve for x
   x = 19,073,731,426.82/158,707.69
6. Step 6: Final answer
   x = 120,181.52