Finding the Fourth Proportional to 80,340,756.72, 120,410,271.72 and 43,451,176.20

Step by Step Solution

1. Step 1: Write the proportion equation
   80,340,756.72 : 120,410,271.72 = 43,451,176.20 : x
2. Step 2: Convert to fraction form
   80,340,756.72/120,410,271.72 = 43,451,176.20/x
3. Step 3: Cross multiply
   80,340,756.72x = 120,410,271.72 × 43,451,176.20
4. Step 4: Simplify right side
   80,340,756.72x = 5,231,967,932,795,597
5. Step 5: Solve for x
   x = 5,231,967,932,795,597/80,340,756.72
6. Step 6: Final answer
   x = 65,122,213.76