Finding the Fourth Proportional to 9,404,693,847.60, 12,978,479,628.18 and 5,175,605,736.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404,693,847.60 : 12,978,479,628.18 = 5,175,605,736.24 : x
2. Step 2: Convert to fraction form
   9,404,693,847.60/12,978,479,628.18 = 5,175,605,736.24/x
3. Step 3: Cross multiply
   9,404,693,847.60x = 12,978,479,628.18 × 5,175,605,736.24
4. Step 4: Simplify right side
   9,404,693,847.60x = 67,171,493,611,282,391,040
5. Step 5: Solve for x
   x = 67,171,493,611,282,391,040/9,404,693,847.60
6. Step 6: Final answer
   x = 7,142,337,081.86