Finding the Fourth Proportional to 50,109.36, 68,993.55 and 42,540

Step by Step Solution

1. Step 1: Write the proportion equation
   50,109.36 : 68,993.55 = 42,540 : x
2. Step 2: Convert to fraction form
   50,109.36/68,993.55 = 42,540/x
3. Step 3: Cross multiply
   50,109.36x = 68,993.55 × 42,540
4. Step 4: Simplify right side
   50,109.36x = 2,934,985,617
5. Step 5: Solve for x
   x = 2,934,985,617/50,109.36
6. Step 6: Final answer
   x = 58,571.60