Finding the Fourth Proportional to 148.78, 222.72 and 108.10

Step by Step Solution

1. Step 1: Write the proportion equation
   148.78 : 222.72 = 108.10 : x
2. Step 2: Convert to fraction form
   148.78/222.72 = 108.10/x
3. Step 3: Cross multiply
   148.78x = 222.72 × 108.10
4. Step 4: Simplify right side
   148.78x = 24,076.03
5. Step 5: Solve for x
   x = 24,076.03/148.78
6. Step 6: Final answer
   x = 161.82