Finding the Fourth Proportional to 78,469.89, 108,208.96 and 67,176.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.89 : 108,208.96 = 67,176.78 : x
2. Step 2: Convert to fraction form
   78,469.89/108,208.96 = 67,176.78/x
3. Step 3: Cross multiply
   78,469.89x = 108,208.96 × 67,176.78
4. Step 4: Simplify right side
   78,469.89x = 7,269,129,499.95
5. Step 5: Solve for x
   x = 7,269,129,499.95/78,469.89
6. Step 6: Final answer
   x = 92,635.91