Finding the Fourth Proportional to 2,485,693,878.78, 3,729,031,993.77 and 911,815,796.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485,693,878.78 : 3,729,031,993.77 = 911,815,796.82 : x
2. Step 2: Convert to fraction form
   2,485,693,878.78/3,729,031,993.77 = 911,815,796.82/x
3. Step 3: Cross multiply
   2,485,693,878.78x = 3,729,031,993.77 × 911,815,796.82
4. Step 4: Simplify right side
   2,485,693,878.78x = 3,400,190,278,766,666,240
5. Step 5: Solve for x
   x = 3,400,190,278,766,666,240/2,485,693,878.78
6. Step 6: Final answer
   x = 1,367,903,870.94