Finding the Fourth Proportional to 31,101.50, 42,921.18 and 17,673.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,101.50 : 42,921.18 = 17,673.32 : x
2. Step 2: Convert to fraction form
   31,101.50/42,921.18 = 17,673.32/x
3. Step 3: Cross multiply
   31,101.50x = 42,921.18 × 17,673.32
4. Step 4: Simplify right side
   31,101.50x = 758,559,748.92
5. Step 5: Solve for x
   x = 758,559,748.92/31,101.50
6. Step 6: Final answer
   x = 24,389.81