Finding the Fourth Proportional to 80,171.76, 120,238.20 and 33,399.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,171.76 : 120,238.20 = 33,399.12 : x
2. Step 2: Convert to fraction form
   80,171.76/120,238.20 = 33,399.12/x
3. Step 3: Cross multiply
   80,171.76x = 120,238.20 × 33,399.12
4. Step 4: Simplify right side
   80,171.76x = 4,015,850,070.38
5. Step 5: Solve for x
   x = 4,015,850,070.38/80,171.76
6. Step 6: Final answer
   x = 50,090.58