Finding the Fourth Proportional to 131.25, 196.72 and 100.71

Step by Step Solution

1. Step 1: Write the proportion equation
   131.25 : 196.72 = 100.71 : x
2. Step 2: Convert to fraction form
   131.25/196.72 = 100.71/x
3. Step 3: Cross multiply
   131.25x = 196.72 × 100.71
4. Step 4: Simplify right side
   131.25x = 19,811.67
5. Step 5: Solve for x
   x = 19,811.67/131.25
6. Step 6: Final answer
   x = 150.95