Finding the Fourth Proportional to 108,016.80, 149,021.60 and 67,660.30

Step by Step Solution

1. Step 1: Write the proportion equation
   108,016.80 : 149,021.60 = 67,660.30 : x
2. Step 2: Convert to fraction form
   108,016.80/149,021.60 = 67,660.30/x
3. Step 3: Cross multiply
   108,016.80x = 149,021.60 × 67,660.30
4. Step 4: Simplify right side
   108,016.80x = 10,082,846,162.48
5. Step 5: Solve for x
   x = 10,082,846,162.48/108,016.80
6. Step 6: Final answer
   x = 93,345.17