Finding the Fourth Proportional to 7,815,101,139.30, 10,970,165,359.50 and 7,815,101,139.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,815,101,139.30 : 10,970,165,359.50 = 7,815,101,139.30 : x
2. Step 2: Convert to fraction form
   7,815,101,139.30/10,970,165,359.50 = 7,815,101,139.30/x
3. Step 3: Cross multiply
   7,815,101,139.30x = 10,970,165,359.50 × 7,815,101,139.30
4. Step 4: Simplify right side
   7,815,101,139.30x = 85,732,951,799,337,844,736
5. Step 5: Solve for x
   x = 85,732,951,799,337,844,736/7,815,101,139.30
6. Step 6: Final answer
   x = 10,970,165,359.50