Finding the Fourth Proportional to 109.32, 164.16 and 100.32

Step by Step Solution

1. Step 1: Write the proportion equation
   109.32 : 164.16 = 100.32 : x
2. Step 2: Convert to fraction form
   109.32/164.16 = 100.32/x
3. Step 3: Cross multiply
   109.32x = 164.16 × 100.32
4. Step 4: Simplify right side
   109.32x = 16,468.53
5. Step 5: Solve for x
   x = 16,468.53/109.32
6. Step 6: Final answer
   x = 150.65