Finding the Fourth Proportional to 74.50, 111.71 and 33.91

Step by Step Solution

1. Step 1: Write the proportion equation
   74.50 : 111.71 = 33.91 : x
2. Step 2: Convert to fraction form
   74.50/111.71 = 33.91/x
3. Step 3: Cross multiply
   74.50x = 111.71 × 33.91
4. Step 4: Simplify right side
   74.50x = 3,787.89
5. Step 5: Solve for x
   x = 3,787.89/74.50
6. Step 6: Final answer
   x = 50.85