Finding the Fourth Proportional to 80,153.82, 120,210.21 and 30,219.15

Step by Step Solution

1. Step 1: Write the proportion equation
   80,153.82 : 120,210.21 = 30,219.15 : x
2. Step 2: Convert to fraction form
   80,153.82/120,210.21 = 30,219.15/x
3. Step 3: Cross multiply
   80,153.82x = 120,210.21 × 30,219.15
4. Step 4: Simplify right side
   80,153.82x = 3,632,650,367.52
5. Step 5: Solve for x
   x = 3,632,650,367.52/80,153.82
6. Step 6: Final answer
   x = 45,320.99