Finding the Fourth Proportional to 1,949,989,872.72, 2,690,991,134.56 and 1,057,916,553.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,949,989,872.72 : 2,690,991,134.56 = 1,057,916,553.12 : x
2. Step 2: Convert to fraction form
   1,949,989,872.72/2,690,991,134.56 = 1,057,916,553.12/x
3. Step 3: Cross multiply
   1,949,989,872.72x = 2,690,991,134.56 × 1,057,916,553.12
4. Step 4: Simplify right side
   1,949,989,872.72x = 2,846,844,065,550,193,152
5. Step 5: Solve for x
   x = 2,846,844,065,550,193,152/1,949,989,872.72
6. Step 6: Final answer
   x = 1,459,927,615.72