Finding the Fourth Proportional to 107.31, 148.16 and 67.98

Step by Step Solution

1. Step 1: Write the proportion equation
   107.31 : 148.16 = 67.98 : x
2. Step 2: Convert to fraction form
   107.31/148.16 = 67.98/x
3. Step 3: Cross multiply
   107.31x = 148.16 × 67.98
4. Step 4: Simplify right side
   107.31x = 10,072.64
5. Step 5: Solve for x
   x = 10,072.64/107.31
6. Step 6: Final answer
   x = 93.86