Finding the Fourth Proportional to 30,527.81, 42,128.50 and 17,789.73

Step by Step Solution

1. Step 1: Write the proportion equation
   30,527.81 : 42,128.50 = 17,789.73 : x
2. Step 2: Convert to fraction form
   30,527.81/42,128.50 = 17,789.73/x
3. Step 3: Cross multiply
   30,527.81x = 42,128.50 × 17,789.73
4. Step 4: Simplify right side
   30,527.81x = 749,454,640.31
5. Step 5: Solve for x
   x = 749,454,640.31/30,527.81
6. Step 6: Final answer
   x = 24,549.90