Finding the Fourth Proportional to 78,880.16, 108,823.52 and 48,612.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,880.16 : 108,823.52 = 48,612.80 : x
2. Step 2: Convert to fraction form
   78,880.16/108,823.52 = 48,612.80/x
3. Step 3: Cross multiply
   78,880.16x = 108,823.52 × 48,612.80
4. Step 4: Simplify right side
   78,880.16x = 5,290,216,013.06
5. Step 5: Solve for x
   x = 5,290,216,013.06/78,880.16
6. Step 6: Final answer
   x = 67,066.50