Finding the Fourth Proportional to 2,128,275,311.18, 2,938,401,912.22 and 1,904,870,111.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,275,311.18 : 2,938,401,912.22 = 1,904,870,111.90 : x
2. Step 2: Convert to fraction form
   2,128,275,311.18/2,938,401,912.22 = 1,904,870,111.90/x
3. Step 3: Cross multiply
   2,128,275,311.18x = 2,938,401,912.22 × 1,904,870,111.90
4. Step 4: Simplify right side
   2,128,275,311.18x = 5,597,273,979,318,231,040
5. Step 5: Solve for x
   x = 5,597,273,979,318,231,040/2,128,275,311.18
6. Step 6: Final answer
   x = 2,629,957,670.39