Finding the Fourth Proportional to 78,422.82, 107,808.60 and 67,480.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,422.82 : 107,808.60 = 67,480.31 : x
2. Step 2: Convert to fraction form
   78,422.82/107,808.60 = 67,480.31/x
3. Step 3: Cross multiply
   78,422.82x = 107,808.60 × 67,480.31
4. Step 4: Simplify right side
   78,422.82x = 7,274,957,209.62
5. Step 5: Solve for x
   x = 7,274,957,209.62/78,422.82
6. Step 6: Final answer
   x = 92,765.82