Finding the Fourth Proportional to 109,155.16, 150,584.33 and 78,892.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,155.16 : 150,584.33 = 78,892.55 : x
2. Step 2: Convert to fraction form
   109,155.16/150,584.33 = 78,892.55/x
3. Step 3: Cross multiply
   109,155.16x = 150,584.33 × 78,892.55
4. Step 4: Simplify right side
   109,155.16x = 11,879,981,792.74
5. Step 5: Solve for x
   x = 11,879,981,792.74/109,155.16
6. Step 6: Final answer
   x = 108,835.73