Finding the Fourth Proportional to 1,162,380,350.85, 1,605,616,070.69 and 861,575,461.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162,380,350.85 : 1,605,616,070.69 = 861,575,461.05 : x
2. Step 2: Convert to fraction form
   1,162,380,350.85/1,605,616,070.69 = 861,575,461.05/x
3. Step 3: Cross multiply
   1,162,380,350.85x = 1,605,616,070.69 × 861,575,461.05
4. Step 4: Simplify right side
   1,162,380,350.85x = 1,383,359,406,369,718,016
5. Step 5: Solve for x
   x = 1,383,359,406,369,718,016/1,162,380,350.85
6. Step 6: Final answer
   x = 1,190,109,076.91