Finding the Fourth Proportional to 100.56, 150.68 and 69.68

Step by Step Solution

1. Step 1: Write the proportion equation
   100.56 : 150.68 = 69.68 : x
2. Step 2: Convert to fraction form
   100.56/150.68 = 69.68/x
3. Step 3: Cross multiply
   100.56x = 150.68 × 69.68
4. Step 4: Simplify right side
   100.56x = 10,499.38
5. Step 5: Solve for x
   x = 10,499.38/100.56
6. Step 6: Final answer
   x = 104.41