Finding the Fourth Proportional to 109.18, 150.76 and 69.86

Step by Step Solution

1. Step 1: Write the proportion equation
   109.18 : 150.76 = 69.86 : x
2. Step 2: Convert to fraction form
   109.18/150.76 = 69.86/x
3. Step 3: Cross multiply
   109.18x = 150.76 × 69.86
4. Step 4: Simplify right side
   109.18x = 10,532.56
5. Step 5: Solve for x
   x = 10,532.56/109.18
6. Step 6: Final answer
   x = 96.47