Finding the Fourth Proportional to 130.97, 196.17 and 100.56

Step by Step Solution

1. Step 1: Write the proportion equation
   130.97 : 196.17 = 100.56 : x
2. Step 2: Convert to fraction form
   130.97/196.17 = 100.56/x
3. Step 3: Cross multiply
   130.97x = 196.17 × 100.56
4. Step 4: Simplify right side
   130.97x = 19,726.86
5. Step 5: Solve for x
   x = 19,726.86/130.97
6. Step 6: Final answer
   x = 150.63