Finding the Fourth Proportional to 100.47, 150.72 and 69.96

Step by Step Solution

1. Step 1: Write the proportion equation
   100.47 : 150.72 = 69.96 : x
2. Step 2: Convert to fraction form
   100.47/150.72 = 69.96/x
3. Step 3: Cross multiply
   100.47x = 150.72 × 69.96
4. Step 4: Simplify right side
   100.47x = 10,544.37
5. Step 5: Solve for x
   x = 10,544.37/100.47
6. Step 6: Final answer
   x = 104.95