Finding the Fourth Proportional to 109.62, 164.30 and 61.43

Step by Step Solution

1. Step 1: Write the proportion equation
   109.62 : 164.30 = 61.43 : x
2. Step 2: Convert to fraction form
   109.62/164.30 = 61.43/x
3. Step 3: Cross multiply
   109.62x = 164.30 × 61.43
4. Step 4: Simplify right side
   109.62x = 10,091.82
5. Step 5: Solve for x
   x = 10,091.82/109.62
6. Step 6: Final answer
   x = 92.06