Finding the Fourth Proportional to 71,919.50, 107,690.61 and 50,745.23

Step by Step Solution

1. Step 1: Write the proportion equation
   71,919.50 : 107,690.61 = 50,745.23 : x
2. Step 2: Convert to fraction form
   71,919.50/107,690.61 = 50,745.23/x
3. Step 3: Cross multiply
   71,919.50x = 107,690.61 × 50,745.23
4. Step 4: Simplify right side
   71,919.50x = 5,464,785,434.73
5. Step 5: Solve for x
   x = 5,464,785,434.73/71,919.50
6. Step 6: Final answer
   x = 75,984.76