Finding the Fourth Proportional to 1,278,382,069.89, 1,763,665,305.89 and 742,442,502.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,382,069.89 : 1,763,665,305.89 = 742,442,502.15 : x
2. Step 2: Convert to fraction form
   1,278,382,069.89/1,763,665,305.89 = 742,442,502.15/x
3. Step 3: Cross multiply
   1,278,382,069.89x = 1,763,665,305.89 × 742,442,502.15
4. Step 4: Simplify right side
   1,278,382,069.89x = 1,309,420,082,656,404,480
5. Step 5: Solve for x
   x = 1,309,420,082,656,404,480/1,278,382,069.89
6. Step 6: Final answer
   x = 1,024,279,136.49