Finding the Fourth Proportional to 2,308,678,168.39, 3,185,890,518.74 and 1,251,383,440.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308,678,168.39 : 3,185,890,518.74 = 1,251,383,440.15 : x
2. Step 2: Convert to fraction form
   2,308,678,168.39/3,185,890,518.74 = 1,251,383,440.15/x
3. Step 3: Cross multiply
   2,308,678,168.39x = 3,185,890,518.74 × 1,251,383,440.15
4. Step 4: Simplify right side
   2,308,678,168.39x = 3,986,770,637,259,942,912
5. Step 5: Solve for x
   x = 3,986,770,637,259,942,912/2,308,678,168.39
6. Step 6: Final answer
   x = 1,726,862,882.78