Finding the Fourth Proportional to 164.48, 246.71 and 42.74

Step by Step Solution

1. Step 1: Write the proportion equation
   164.48 : 246.71 = 42.74 : x
2. Step 2: Convert to fraction form
   164.48/246.71 = 42.74/x
3. Step 3: Cross multiply
   164.48x = 246.71 × 42.74
4. Step 4: Simplify right side
   164.48x = 10,543.15
5. Step 5: Solve for x
   x = 10,543.15/164.48
6. Step 6: Final answer
   x = 64.10