Finding the Fourth Proportional to 99.10, 148.69 and 38.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99.10 : 148.69 = 38.25 : x
2. Step 2: Convert to fraction form
   99.10/148.69 = 38.25/x
3. Step 3: Cross multiply
   99.10x = 148.69 × 38.25
4. Step 4: Simplify right side
   99.10x = 5,687.39
5. Step 5: Solve for x
   x = 5,687.39/99.10
6. Step 6: Final answer
   x = 57.39