Finding the Fourth Proportional to 31,269.81, 43,152.39 and 17,123.55

Step by Step Solution

1. Step 1: Write the proportion equation
   31,269.81 : 43,152.39 = 17,123.55 : x
2. Step 2: Convert to fraction form
   31,269.81/43,152.39 = 17,123.55/x
3. Step 3: Cross multiply
   31,269.81x = 43,152.39 × 17,123.55
4. Step 4: Simplify right side
   31,269.81x = 738,922,107.78
5. Step 5: Solve for x
   x = 738,922,107.78/31,269.81
6. Step 6: Final answer
   x = 23,630.53