Finding the Fourth Proportional to 10,612,139,861.72, 15,909,822,404.56 and 5,297,524,419.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,612,139,861.72 : 15,909,822,404.56 = 5,297,524,419.80 : x
2. Step 2: Convert to fraction form
   10,612,139,861.72/15,909,822,404.56 = 5,297,524,419.80/x
3. Step 3: Cross multiply
   10,612,139,861.72x = 15,909,822,404.56 × 5,297,524,419.80
4. Step 4: Simplify right side
   10,612,139,861.72x = 84,282,672,702,837,751,808
5. Step 5: Solve for x
   x = 84,282,672,702,837,751,808/10,612,139,861.72
6. Step 6: Final answer
   x = 7,942,099,689.70