Finding the Fourth Proportional to 196.88, 294.89 and 105.53

Step by Step Solution

1. Step 1: Write the proportion equation
   196.88 : 294.89 = 105.53 : x
2. Step 2: Convert to fraction form
   196.88/294.89 = 105.53/x
3. Step 3: Cross multiply
   196.88x = 294.89 × 105.53
4. Step 4: Simplify right side
   196.88x = 31,117.74
5. Step 5: Solve for x
   x = 31,117.74/196.88
6. Step 6: Final answer
   x = 158.06