Finding the Fourth Proportional to 1,139,915,108.78, 1,710,978,351.38 and 550,120,411.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,915,108.78 : 1,710,978,351.38 = 550,120,411.97 : x
2. Step 2: Convert to fraction form
   1,139,915,108.78/1,710,978,351.38 = 550,120,411.97/x
3. Step 3: Cross multiply
   1,139,915,108.78x = 1,710,978,351.38 × 550,120,411.97
4. Step 4: Simplify right side
   1,139,915,108.78x = 941,244,115,536,534,272
5. Step 5: Solve for x
   x = 941,244,115,536,534,272/1,139,915,108.78
6. Step 6: Final answer
   x = 825,714,220.55