Finding the Fourth Proportional to 173.71, 239.71 and 100.00

Step by Step Solution

1. Step 1: Write the proportion equation
   173.71 : 239.71 = 100.00 : x
2. Step 2: Convert to fraction form
   173.71/239.71 = 100.00/x
3. Step 3: Cross multiply
   173.71x = 239.71 × 100.00
4. Step 4: Simplify right side
   173.71x = 23,969.30
5. Step 5: Solve for x
   x = 23,969.30/173.71
6. Step 6: Final answer
   x = 137.99