Finding the Fourth Proportional to 9,404,693,839.37, 12,978,479,616.77 and 5,175,605,727.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404,693,839.37 : 12,978,479,616.77 = 5,175,605,727.99 : x
2. Step 2: Convert to fraction form
   9,404,693,839.37/12,978,479,616.77 = 5,175,605,727.99/x
3. Step 3: Cross multiply
   9,404,693,839.37x = 12,978,479,616.77 × 5,175,605,727.99
4. Step 4: Simplify right side
   9,404,693,839.37x = 67,171,493,445,130,387,456
5. Step 5: Solve for x
   x = 67,171,493,445,130,387,456/9,404,693,839.37
6. Step 6: Final answer
   x = 7,142,337,070.45