Finding the Fourth Proportional to 498,300,002.00, 687,554,270.89 and 278,249,570.00

Step by Step Solution

1. Step 1: Write the proportion equation
   498,300,002.00 : 687,554,270.89 = 278,249,570.00 : x
2. Step 2: Convert to fraction form
   498,300,002.00/687,554,270.89 = 278,249,570.00/x
3. Step 3: Cross multiply
   498,300,002.00x = 687,554,270.89 × 278,249,570.00
4. Step 4: Simplify right side
   498,300,002.00x = 191,311,680,222,672,640
5. Step 5: Solve for x
   x = 191,311,680,222,672,640/498,300,002.00
6. Step 6: Final answer
   x = 383,928,716.55