Finding the Fourth Proportional to 499,288.50, 689,020.59 and 272,934

Step by Step Solution

1. Step 1: Write the proportion equation
   499,288.50 : 689,020.59 = 272,934 : x
2. Step 2: Convert to fraction form
   499,288.50/689,020.59 = 272,934/x
3. Step 3: Cross multiply
   499,288.50x = 689,020.59 × 272,934
4. Step 4: Simplify right side
   499,288.50x = 188,057,145,711.06
5. Step 5: Solve for x
   x = 188,057,145,711.06/499,288.50
6. Step 6: Final answer
   x = 376,650.26