Finding the Fourth Proportional to 109.38, 150.86 and 69.98

Step by Step Solution

1. Step 1: Write the proportion equation
   109.38 : 150.86 = 69.98 : x
2. Step 2: Convert to fraction form
   109.38/150.86 = 69.98/x
3. Step 3: Cross multiply
   109.38x = 150.86 × 69.98
4. Step 4: Simplify right side
   109.38x = 10,557.18
5. Step 5: Solve for x
   x = 10,557.18/109.38
6. Step 6: Final answer
   x = 96.52