Finding the Fourth Proportional to 78,468.89, 108,207.59 and 67,175.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,468.89 : 108,207.59 = 67,175.78 : x
2. Step 2: Convert to fraction form
   78,468.89/108,207.59 = 67,175.78/x
3. Step 3: Cross multiply
   78,468.89x = 108,207.59 × 67,175.78
4. Step 4: Simplify right side
   78,468.89x = 7,268,928,383.25
5. Step 5: Solve for x
   x = 7,268,928,383.25/78,468.89
6. Step 6: Final answer
   x = 92,634.53