Finding the Fourth Proportional to 80,421.54, 110,945.34 and 50,214.42

Step by Step Solution

1. Step 1: Write the proportion equation
   80,421.54 : 110,945.34 = 50,214.42 : x
2. Step 2: Convert to fraction form
   80,421.54/110,945.34 = 50,214.42/x
3. Step 3: Cross multiply
   80,421.54x = 110,945.34 × 50,214.42
4. Step 4: Simplify right side
   80,421.54x = 5,571,055,899.80
5. Step 5: Solve for x
   x = 5,571,055,899.80/80,421.54
6. Step 6: Final answer
   x = 69,273.18