Finding the Fourth Proportional to 80,276.72, 120,416.52 and 30,380.32

Step by Step Solution

1. Step 1: Write the proportion equation
   80,276.72 : 120,416.52 = 30,380.32 : x
2. Step 2: Convert to fraction form
   80,276.72/120,416.52 = 30,380.32/x
3. Step 3: Cross multiply
   80,276.72x = 120,416.52 × 30,380.32
4. Step 4: Simplify right side
   80,276.72x = 3,658,291,997.99
5. Step 5: Solve for x
   x = 3,658,291,997.99/80,276.72
6. Step 6: Final answer
   x = 45,571.02