Finding the Fourth Proportional to 158,744.32, 219,069.83 and 87,131

Step by Step Solution

1. Step 1: Write the proportion equation
   158,744.32 : 219,069.83 = 87,131 : x
2. Step 2: Convert to fraction form
   158,744.32/219,069.83 = 87,131/x
3. Step 3: Cross multiply
   158,744.32x = 219,069.83 × 87,131
4. Step 4: Simplify right side
   158,744.32x = 19,087,773,357.73
5. Step 5: Solve for x
   x = 19,087,773,357.73/158,744.32
6. Step 6: Final answer
   x = 120,242.24