Finding the Fourth Proportional to 103.71, 155.59 and 83.37

Step by Step Solution

1. Step 1: Write the proportion equation
   103.71 : 155.59 = 83.37 : x
2. Step 2: Convert to fraction form
   103.71/155.59 = 83.37/x
3. Step 3: Cross multiply
   103.71x = 155.59 × 83.37
4. Step 4: Simplify right side
   103.71x = 12,971.54
5. Step 5: Solve for x
   x = 12,971.54/103.71
6. Step 6: Final answer
   x = 125.08