Finding the Fourth Proportional to 78,723.60, 108,635.88 and 42,913.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,723.60 : 108,635.88 = 42,913.04 : x
2. Step 2: Convert to fraction form
   78,723.60/108,635.88 = 42,913.04/x
3. Step 3: Cross multiply
   78,723.60x = 108,635.88 × 42,913.04
4. Step 4: Simplify right side
   78,723.60x = 4,661,895,863.88
5. Step 5: Solve for x
   x = 4,661,895,863.88/78,723.60
6. Step 6: Final answer
   x = 59,218.53