Finding the Fourth Proportional to 1,008,665,553.42, 1,391,993,076.71 and 585,247,241.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,665,553.42 : 1,391,993,076.71 = 585,247,241.25 : x
2. Step 2: Convert to fraction form
   1,008,665,553.42/1,391,993,076.71 = 585,247,241.25/x
3. Step 3: Cross multiply
   1,008,665,553.42x = 1,391,993,076.71 × 585,247,241.25
4. Step 4: Simplify right side
   1,008,665,553.42x = 814,660,107,985,090,304
5. Step 5: Solve for x
   x = 814,660,107,985,090,304/1,008,665,553.42
6. Step 6: Final answer
   x = 807,661,276.05