Finding the Fourth Proportional to 111,960.24, 154,498.68 and 67,239.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111,960.24 : 154,498.68 = 67,239.60 : x
2. Step 2: Convert to fraction form
   111,960.24/154,498.68 = 67,239.60/x
3. Step 3: Cross multiply
   111,960.24x = 154,498.68 × 67,239.60
4. Step 4: Simplify right side
   111,960.24x = 10,388,429,443.73
5. Step 5: Solve for x
   x = 10,388,429,443.73/111,960.24
6. Step 6: Final answer
   x = 92,786.77