Finding the Fourth Proportional to 50,078.18, 75,112.38 and 13,142.18

Step by Step Solution

1. Step 1: Write the proportion equation
   50,078.18 : 75,112.38 = 13,142.18 : x
2. Step 2: Convert to fraction form
   50,078.18/75,112.38 = 13,142.18/x
3. Step 3: Cross multiply
   50,078.18x = 75,112.38 × 13,142.18
4. Step 4: Simplify right side
   50,078.18x = 987,140,418.19
5. Step 5: Solve for x
   x = 987,140,418.19/50,078.18
6. Step 6: Final answer
   x = 19,711.99