Finding the Fourth Proportional to 162,354.96, 243,562.68 and 57,240.72

Step by Step Solution

1. Step 1: Write the proportion equation
   162,354.96 : 243,562.68 = 57,240.72 : x
2. Step 2: Convert to fraction form
   162,354.96/243,562.68 = 57,240.72/x
3. Step 3: Cross multiply
   162,354.96x = 243,562.68 × 57,240.72
4. Step 4: Simplify right side
   162,354.96x = 13,941,703,168.33
5. Step 5: Solve for x
   x = 13,941,703,168.33/162,354.96
6. Step 6: Final answer
   x = 85,871.74