Finding the Fourth Proportional to 1,227,055,729.51, 1,693,338,801.25 and 698,419,710.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227,055,729.51 : 1,693,338,801.25 = 698,419,710.10 : x
2. Step 2: Convert to fraction form
   1,227,055,729.51/1,693,338,801.25 = 698,419,710.10/x
3. Step 3: Cross multiply
   1,227,055,729.51x = 1,693,338,801.25 × 698,419,710.10
4. Step 4: Simplify right side
   1,227,055,729.51x = 1,182,661,194,661,639,936
5. Step 5: Solve for x
   x = 1,182,661,194,661,639,936/1,227,055,729.51
6. Step 6: Final answer
   x = 963,820,278.27