Finding the Fourth Proportional to 107.18, 147.83 and 67.85

Step by Step Solution

1. Step 1: Write the proportion equation
   107.18 : 147.83 = 67.85 : x
2. Step 2: Convert to fraction form
   107.18/147.83 = 67.85/x
3. Step 3: Cross multiply
   107.18x = 147.83 × 67.85
4. Step 4: Simplify right side
   107.18x = 10,030.27
5. Step 5: Solve for x
   x = 10,030.27/107.18
6. Step 6: Final answer
   x = 93.58