Finding the Fourth Proportional to 146,443.20, 219,581.52 and 57,648.60

Step by Step Solution

1. Step 1: Write the proportion equation
   146,443.20 : 219,581.52 = 57,648.60 : x
2. Step 2: Convert to fraction form
   146,443.20/219,581.52 = 57,648.60/x
3. Step 3: Cross multiply
   146,443.20x = 219,581.52 × 57,648.60
4. Step 4: Simplify right side
   146,443.20x = 12,658,567,213.87
5. Step 5: Solve for x
   x = 12,658,567,213.87/146,443.20
6. Step 6: Final answer
   x = 86,440.12