Finding the Fourth Proportional to 78,601.46, 117,401.71 and 67,540.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,601.46 : 117,401.71 = 67,540.34 : x
2. Step 2: Convert to fraction form
   78,601.46/117,401.71 = 67,540.34/x
3. Step 3: Cross multiply
   78,601.46x = 117,401.71 × 67,540.34
4. Step 4: Simplify right side
   78,601.46x = 7,929,351,072.28
5. Step 5: Solve for x
   x = 7,929,351,072.28/78,601.46
6. Step 6: Final answer
   x = 100,880.46