Finding the Fourth Proportional to 105.84, 158.02 and 100.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105.84 : 158.02 = 100.56 : x
2. Step 2: Convert to fraction form
   105.84/158.02 = 100.56/x
3. Step 3: Cross multiply
   105.84x = 158.02 × 100.56
4. Step 4: Simplify right side
   105.84x = 15,890.49
5. Step 5: Solve for x
   x = 15,890.49/105.84
6. Step 6: Final answer
   x = 150.14