Finding the Fourth Proportional to 50,673.57, 69,929.61 and 28,317.57

Step by Step Solution

1. Step 1: Write the proportion equation
   50,673.57 : 69,929.61 = 28,317.57 : x
2. Step 2: Convert to fraction form
   50,673.57/69,929.61 = 28,317.57/x
3. Step 3: Cross multiply
   50,673.57x = 69,929.61 × 28,317.57
4. Step 4: Simplify right side
   50,673.57x = 1,980,236,626.25
5. Step 5: Solve for x
   x = 1,980,236,626.25/50,673.57
6. Step 6: Final answer
   x = 39,078.29