Finding the Fourth Proportional to 78,314.48, 108,074.80 and 42,504.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,314.48 : 108,074.80 = 42,504.80 : x
2. Step 2: Convert to fraction form
   78,314.48/108,074.80 = 42,504.80/x
3. Step 3: Cross multiply
   78,314.48x = 108,074.80 × 42,504.80
4. Step 4: Simplify right side
   78,314.48x = 4,593,697,759.04
5. Step 5: Solve for x
   x = 4,593,697,759.04/78,314.48
6. Step 6: Final answer
   x = 58,657.07