Finding the Fourth Proportional to 8,139,647,818.30, 12,210,367,522.65 and 2,970,909,514.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,647,818.30 : 12,210,367,522.65 = 2,970,909,514.30 : x
2. Step 2: Convert to fraction form
   8,139,647,818.30/12,210,367,522.65 = 2,970,909,514.30/x
3. Step 3: Cross multiply
   8,139,647,818.30x = 12,210,367,522.65 × 2,970,909,514.30
4. Step 4: Simplify right side
   8,139,647,818.30x = 36,275,897,046,140,608,512
5. Step 5: Solve for x
   x = 36,275,897,046,140,608,512/8,139,647,818.30
6. Step 6: Final answer
   x = 4,456,691,229.88