Finding the Fourth Proportional to 78,452.54, 108,265.61 and 42,642.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,452.54 : 108,265.61 = 42,642.56 : x
2. Step 2: Convert to fraction form
   78,452.54/108,265.61 = 42,642.56/x
3. Step 3: Cross multiply
   78,452.54x = 108,265.61 × 42,642.56
4. Step 4: Simplify right side
   78,452.54x = 4,616,722,335.64
5. Step 5: Solve for x
   x = 4,616,722,335.64/78,452.54
6. Step 6: Final answer
   x = 58,847.33