Finding the Fourth Proportional to 78,452.42, 108,265.00 and 42,642.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,452.42 : 108,265.00 = 42,642.43 : x
2. Step 2: Convert to fraction form
   78,452.42/108,265.00 = 42,642.43/x
3. Step 3: Cross multiply
   78,452.42x = 108,265.00 × 42,642.43
4. Step 4: Simplify right side
   78,452.42x = 4,616,682,306.68
5. Step 5: Solve for x
   x = 4,616,682,306.68/78,452.42
6. Step 6: Final answer
   x = 58,846.91