Finding the Fourth Proportional to 50,427.28, 69,608.69 and 39,644.02

Step by Step Solution

1. Step 1: Write the proportion equation
   50,427.28 : 69,608.69 = 39,644.02 : x
2. Step 2: Convert to fraction form
   50,427.28/69,608.69 = 39,644.02/x
3. Step 3: Cross multiply
   50,427.28x = 69,608.69 × 39,644.02
4. Step 4: Simplify right side
   50,427.28x = 2,759,568,298.53
5. Step 5: Solve for x
   x = 2,759,568,298.53/50,427.28
6. Step 6: Final answer
   x = 54,723.72