Finding the Fourth Proportional to 100.42, 138.71 and 97.27

Step by Step Solution

1. Step 1: Write the proportion equation
   100.42 : 138.71 = 97.27 : x
2. Step 2: Convert to fraction form
   100.42/138.71 = 97.27/x
3. Step 3: Cross multiply
   100.42x = 138.71 × 97.27
4. Step 4: Simplify right side
   100.42x = 13,492.22
5. Step 5: Solve for x
   x = 13,492.22/100.42
6. Step 6: Final answer
   x = 134.36