Finding the Fourth Proportional to 255,320.72, 383,156.04 and 89,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   255,320.72 : 383,156.04 = 89,108.72 : x
2. Step 2: Convert to fraction form
   255,320.72/383,156.04 = 89,108.72/x
3. Step 3: Cross multiply
   255,320.72x = 383,156.04 × 89,108.72
4. Step 4: Simplify right side
   255,320.72x = 34,142,544,284.67
5. Step 5: Solve for x
   x = 34,142,544,284.67/255,320.72
6. Step 6: Final answer
   x = 133,724.14