Finding the Fourth Proportional to 1,826,936,019.99, 2,521,195,894.16 and 991,570,604.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826,936,019.99 : 2,521,195,894.16 = 991,570,604.31 : x
2. Step 2: Convert to fraction form
   1,826,936,019.99/2,521,195,894.16 = 991,570,604.31/x
3. Step 3: Cross multiply
   1,826,936,019.99x = 2,521,195,894.16 × 991,570,604.31
4. Step 4: Simplify right side
   1,826,936,019.99x = 2,499,943,736,351,164,416
5. Step 5: Solve for x
   x = 2,499,943,736,351,164,416/1,826,936,019.99
6. Step 6: Final answer
   x = 1,368,380,561.22