Finding the Fourth Proportional to 8,139,647,870.80, 12,210,367,601.40 and 2,970,909,566.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,647,870.80 : 12,210,367,601.40 = 2,970,909,566.80 : x
2. Step 2: Convert to fraction form
   8,139,647,870.80/12,210,367,601.40 = 2,970,909,566.80/x
3. Step 3: Cross multiply
   8,139,647,870.80x = 12,210,367,601.40 × 2,970,909,566.80
4. Step 4: Simplify right side
   8,139,647,870.80x = 36,275,897,921,144,029,184
5. Step 5: Solve for x
   x = 36,275,897,921,144,029,184/8,139,647,870.80
6. Step 6: Final answer
   x = 4,456,691,308.64