Finding the Fourth Proportional to 109.31, 164.23 and 61.25

Step by Step Solution

1. Step 1: Write the proportion equation
   109.31 : 164.23 = 61.25 : x
2. Step 2: Convert to fraction form
   109.31/164.23 = 61.25/x
3. Step 3: Cross multiply
   109.31x = 164.23 × 61.25
4. Step 4: Simplify right side
   109.31x = 10,058.11
5. Step 5: Solve for x
   x = 10,058.11/109.31
6. Step 6: Final answer
   x = 92.02