Finding the Fourth Proportional to 109.92, 164.84 and 61.25

Step by Step Solution

1. Step 1: Write the proportion equation
   109.92 : 164.84 = 61.25 : x
2. Step 2: Convert to fraction form
   109.92/164.84 = 61.25/x
3. Step 3: Cross multiply
   109.92x = 164.84 × 61.25
4. Step 4: Simplify right side
   109.92x = 10,095.55
5. Step 5: Solve for x
   x = 10,095.55/109.92
6. Step 6: Final answer
   x = 91.84