Finding the Fourth Proportional to 152,640.36, 228,883.69 and 89,475.55

Step by Step Solution

1. Step 1: Write the proportion equation
   152,640.36 : 228,883.69 = 89,475.55 : x
2. Step 2: Convert to fraction form
   152,640.36/228,883.69 = 89,475.55/x
3. Step 3: Cross multiply
   152,640.36x = 228,883.69 × 89,475.55
4. Step 4: Simplify right side
   152,640.36x = 20,479,494,048.78
5. Step 5: Solve for x
   x = 20,479,494,048.78/152,640.36
6. Step 6: Final answer
   x = 134,168.28