Finding the Fourth Proportional to 100.29, 149.56 and 88.17

Step by Step Solution

1. Step 1: Write the proportion equation
   100.29 : 149.56 = 88.17 : x
2. Step 2: Convert to fraction form
   100.29/149.56 = 88.17/x
3. Step 3: Cross multiply
   100.29x = 149.56 × 88.17
4. Step 4: Simplify right side
   100.29x = 13,186.71
5. Step 5: Solve for x
   x = 13,186.71/100.29
6. Step 6: Final answer
   x = 131.49