Finding the Fourth Proportional to 21,307,383,887.34, 31,968,173,885.39 and 7,143,751,158.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,307,383,887.34 : 31,968,173,885.39 = 7,143,751,158.42 : x
2. Step 2: Convert to fraction form
   21,307,383,887.34/31,968,173,885.39 = 7,143,751,158.42/x
3. Step 3: Cross multiply
   21,307,383,887.34x = 31,968,173,885.39 × 7,143,751,158.42
4. Step 4: Simplify right side
   21,307,383,887.34x = 228,372,679,226,298,236,928
5. Step 5: Solve for x
   x = 228,372,679,226,298,236,928/21,307,383,887.34
6. Step 6: Final answer
   x = 10,718,006,510.50