Finding the Fourth Proportional to 2,012,758,771.05, 3,019,024,601.82 and 891,959,620.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012,758,771.05 : 3,019,024,601.82 = 891,959,620.05 : x
2. Step 2: Convert to fraction form
   2,012,758,771.05/3,019,024,601.82 = 891,959,620.05/x
3. Step 3: Cross multiply
   2,012,758,771.05x = 3,019,024,601.82 × 891,959,620.05
4. Step 4: Simplify right side
   2,012,758,771.05x = 2,692,848,036,760,969,728
5. Step 5: Solve for x
   x = 2,692,848,036,760,969,728/2,012,758,771.05
6. Step 6: Final answer
   x = 1,337,889,107.97