Finding the Fourth Proportional to 78,078.42, 107,747.48 and 42,267.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,078.42 : 107,747.48 = 42,267.52 : x
2. Step 2: Convert to fraction form
   78,078.42/107,747.48 = 42,267.52/x
3. Step 3: Cross multiply
   78,078.42x = 107,747.48 × 42,267.52
4. Step 4: Simplify right side
   78,078.42x = 4,554,218,765.85
5. Step 5: Solve for x
   x = 4,554,218,765.85/78,078.42
6. Step 6: Final answer
   x = 58,328.78