Finding the Fourth Proportional to 80,046.72, 120,132.06 and 30,172.19

Step by Step Solution

1. Step 1: Write the proportion equation
   80,046.72 : 120,132.06 = 30,172.19 : x
2. Step 2: Convert to fraction form
   80,046.72/120,132.06 = 30,172.19/x
3. Step 3: Cross multiply
   80,046.72x = 120,132.06 × 30,172.19
4. Step 4: Simplify right side
   80,046.72x = 3,624,646,738.75
5. Step 5: Solve for x
   x = 3,624,646,738.75/80,046.72
6. Step 6: Final answer
   x = 45,281.64