Finding the Fourth Proportional to 78,378.07, 108,162.05 and 42,568.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,378.07 : 108,162.05 = 42,568.68 : x
2. Step 2: Convert to fraction form
   78,378.07/108,162.05 = 42,568.68/x
3. Step 3: Cross multiply
   78,378.07x = 108,162.05 × 42,568.68
4. Step 4: Simplify right side
   78,378.07x = 4,604,315,694.59
5. Step 5: Solve for x
   x = 4,604,315,694.59/78,378.07
6. Step 6: Final answer
   x = 58,744.95