Finding the Fourth Proportional to 164.55, 246.83 and 42.81

Step by Step Solution

1. Step 1: Write the proportion equation
   164.55 : 246.83 = 42.81 : x
2. Step 2: Convert to fraction form
   164.55/246.83 = 42.81/x
3. Step 3: Cross multiply
   164.55x = 246.83 × 42.81
4. Step 4: Simplify right side
   164.55x = 10,566.69
5. Step 5: Solve for x
   x = 10,566.69/164.55
6. Step 6: Final answer
   x = 64.22