Finding the Fourth Proportional to 499,061.92, 688,707.24 and 272,707.42

Step by Step Solution

1. Step 1: Write the proportion equation
   499,061.92 : 688,707.24 = 272,707.42 : x
2. Step 2: Convert to fraction form
   499,061.92/688,707.24 = 272,707.42/x
3. Step 3: Cross multiply
   499,061.92x = 688,707.24 × 272,707.42
4. Step 4: Simplify right side
   499,061.92x = 187,815,574,555.72
5. Step 5: Solve for x
   x = 187,815,574,555.72/499,061.92
6. Step 6: Final answer
   x = 376,337.22