Finding the Fourth Proportional to 146,280.69, 219,401.60 and 57,510.36

Step by Step Solution

1. Step 1: Write the proportion equation
   146,280.69 : 219,401.60 = 57,510.36 : x
2. Step 2: Convert to fraction form
   146,280.69/219,401.60 = 57,510.36/x
3. Step 3: Cross multiply
   146,280.69x = 219,401.60 × 57,510.36
4. Step 4: Simplify right side
   146,280.69x = 12,617,864,713.02
5. Step 5: Solve for x
   x = 12,617,864,713.02/146,280.69
6. Step 6: Final answer
   x = 86,257.90