Finding the Fourth Proportional to 1,025,419,490.37, 1,538,129,253.78 and 249,059,919.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025,419,490.37 : 1,538,129,253.78 = 249,059,919.15 : x
2. Step 2: Convert to fraction form
   1,025,419,490.37/1,538,129,253.78 = 249,059,919.15/x
3. Step 3: Cross multiply
   1,025,419,490.37x = 1,538,129,253.78 × 249,059,919.15
4. Step 4: Simplify right side
   1,025,419,490.37x = 383,086,347,588,696,640
5. Step 5: Solve for x
   x = 383,086,347,588,696,640/1,025,419,490.37
6. Step 6: Final answer
   x = 373,589,883.15