Finding the Fourth Proportional to 158,978.68, 219,388.04 and 87,357.17

Step by Step Solution

1. Step 1: Write the proportion equation
   158,978.68 : 219,388.04 = 87,357.17 : x
2. Step 2: Convert to fraction form
   158,978.68/219,388.04 = 87,357.17/x
3. Step 3: Cross multiply
   158,978.68x = 219,388.04 × 87,357.17
4. Step 4: Simplify right side
   158,978.68x = 19,165,117,209.31
5. Step 5: Solve for x
   x = 19,165,117,209.31/158,978.68
6. Step 6: Final answer
   x = 120,551.49