Finding the Fourth Proportional to 2,663,786,521.99, 3,993,863,697.98 and 1,351,157,465.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663,786,521.99 : 3,993,863,697.98 = 1,351,157,465.40 : x
2. Step 2: Convert to fraction form
   2,663,786,521.99/3,993,863,697.98 = 1,351,157,465.40/x
3. Step 3: Cross multiply
   2,663,786,521.99x = 3,993,863,697.98 × 1,351,157,465.40
4. Step 4: Simplify right side
   2,663,786,521.99x = 5,396,338,751,315,728,384
5. Step 5: Solve for x
   x = 5,396,338,751,315,728,384/2,663,786,521.99
6. Step 6: Final answer
   x = 2,025,815,021.88