Finding the Fourth Proportional to 308,369,280, 425,644,882.56 and 198,361,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   308,369,280 : 425,644,882.56 = 198,361,002.72 : x
2. Step 2: Convert to fraction form
   308,369,280/425,644,882.56 = 198,361,002.72/x
3. Step 3: Cross multiply
   308,369,280x = 425,644,882.56 × 198,361,002.72
4. Step 4: Simplify right side
   308,369,280x = 84,431,345,707,238,240
5. Step 5: Solve for x
   x = 84,431,345,707,238,240/308,369,280
6. Step 6: Final answer
   x = 273,799,470.90