Finding the Fourth Proportional to 9,404,693,816.21, 12,978,479,584.87 and 5,175,605,704.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404,693,816.21 : 12,978,479,584.87 = 5,175,605,704.84 : x
2. Step 2: Convert to fraction form
   9,404,693,816.21/12,978,479,584.87 = 5,175,605,704.84/x
3. Step 3: Cross multiply
   9,404,693,816.21x = 12,978,479,584.87 × 5,175,605,704.84
4. Step 4: Simplify right side
   9,404,693,816.21x = 67,171,492,979,530,031,104
5. Step 5: Solve for x
   x = 67,171,492,979,530,031,104/9,404,693,816.21
6. Step 6: Final answer
   x = 7,142,337,038.53