Finding the Fourth Proportional to 78,078.18, 107,747.15 and 42,267.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,078.18 : 107,747.15 = 42,267.27 : x
2. Step 2: Convert to fraction form
   78,078.18/107,747.15 = 42,267.27/x
3. Step 3: Cross multiply
   78,078.18x = 107,747.15 × 42,267.27
4. Step 4: Simplify right side
   78,078.18x = 4,554,177,669.44
5. Step 5: Solve for x
   x = 4,554,177,669.44/78,078.18
6. Step 6: Final answer
   x = 58,328.43