Finding the Fourth Proportional to 116.01, 173.94 and 42.87

Step by Step Solution

1. Step 1: Write the proportion equation
   116.01 : 173.94 = 42.87 : x
2. Step 2: Convert to fraction form
   116.01/173.94 = 42.87/x
3. Step 3: Cross multiply
   116.01x = 173.94 × 42.87
4. Step 4: Simplify right side
   116.01x = 7,456.81
5. Step 5: Solve for x
   x = 7,456.81/116.01
6. Step 6: Final answer
   x = 64.28