Finding the Fourth Proportional to 152,040.54, 228,025.43 and 57,280.21

Step by Step Solution

1. Step 1: Write the proportion equation
   152,040.54 : 228,025.43 = 57,280.21 : x
2. Step 2: Convert to fraction form
   152,040.54/228,025.43 = 57,280.21/x
3. Step 3: Cross multiply
   152,040.54x = 228,025.43 × 57,280.21
4. Step 4: Simplify right side
   152,040.54x = 13,061,345,156.72
5. Step 5: Solve for x
   x = 13,061,345,156.72/152,040.54
6. Step 6: Final answer
   x = 85,906.99