Finding the Fourth Proportional to 131.22, 196.74 and 100.62

Step by Step Solution

1. Step 1: Write the proportion equation
   131.22 : 196.74 = 100.62 : x
2. Step 2: Convert to fraction form
   131.22/196.74 = 100.62/x
3. Step 3: Cross multiply
   131.22x = 196.74 × 100.62
4. Step 4: Simplify right side
   131.22x = 19,795.98
5. Step 5: Solve for x
   x = 19,795.98/131.22
6. Step 6: Final answer
   x = 150.86