Finding the Fourth Proportional to 109.83, 164.39 and 64.11

Step by Step Solution

1. Step 1: Write the proportion equation
   109.83 : 164.39 = 64.11 : x
2. Step 2: Convert to fraction form
   109.83/164.39 = 64.11/x
3. Step 3: Cross multiply
   109.83x = 164.39 × 64.11
4. Step 4: Simplify right side
   109.83x = 10,538.72
5. Step 5: Solve for x
   x = 10,538.72/109.83
6. Step 6: Final answer
   x = 95.95