Finding the Fourth Proportional to 104.73, 156.42 and 90.33

Step by Step Solution

1. Step 1: Write the proportion equation
   104.73 : 156.42 = 90.33 : x
2. Step 2: Convert to fraction form
   104.73/156.42 = 90.33/x
3. Step 3: Cross multiply
   104.73x = 156.42 × 90.33
4. Step 4: Simplify right side
   104.73x = 14,128.41
5. Step 5: Solve for x
   x = 14,128.41/104.73
6. Step 6: Final answer
   x = 134.91