Finding the Fourth Proportional to 9,404,693,839.12, 12,978,479,616.42 and 5,175,605,727.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404,693,839.12 : 12,978,479,616.42 = 5,175,605,727.74 : x
2. Step 2: Convert to fraction form
   9,404,693,839.12/12,978,479,616.42 = 5,175,605,727.74/x
3. Step 3: Cross multiply
   9,404,693,839.12x = 12,978,479,616.42 × 5,175,605,727.74
4. Step 4: Simplify right side
   9,404,693,839.12x = 67,171,493,440,100,188,160
5. Step 5: Solve for x
   x = 67,171,493,440,100,188,160/9,404,693,839.12
6. Step 6: Final answer
   x = 7,142,337,070.11