Finding the Fourth Proportional to 90.69, 136.06 and 32.91

Step by Step Solution

1. Step 1: Write the proportion equation
   90.69 : 136.06 = 32.91 : x
2. Step 2: Convert to fraction form
   90.69/136.06 = 32.91/x
3. Step 3: Cross multiply
   90.69x = 136.06 × 32.91
4. Step 4: Simplify right side
   90.69x = 4,477.73
5. Step 5: Solve for x
   x = 4,477.73/90.69
6. Step 6: Final answer
   x = 49.37