Finding the Fourth Proportional to 162,490.32, 243,646.16 and 50,139.88

Step by Step Solution

1. Step 1: Write the proportion equation
   162,490.32 : 243,646.16 = 50,139.88 : x
2. Step 2: Convert to fraction form
   162,490.32/243,646.16 = 50,139.88/x
3. Step 3: Cross multiply
   162,490.32x = 243,646.16 × 50,139.88
4. Step 4: Simplify right side
   162,490.32x = 12,216,389,224.86
5. Step 5: Solve for x
   x = 12,216,389,224.86/162,490.32
6. Step 6: Final answer
   x = 75,182.26