Finding the Fourth Proportional to 146,380.72, 219,623.76 and 57,585.04

Step by Step Solution

1. Step 1: Write the proportion equation
   146,380.72 : 219,623.76 = 57,585.04 : x
2. Step 2: Convert to fraction form
   146,380.72/219,623.76 = 57,585.04/x
3. Step 3: Cross multiply
   146,380.72x = 219,623.76 × 57,585.04
4. Step 4: Simplify right side
   146,380.72x = 12,647,043,004.55
5. Step 5: Solve for x
   x = 12,647,043,004.55/146,380.72
6. Step 6: Final answer
   x = 86,398.28