Finding the Fourth Proportional to 30,456.63, 42,030.50 and 17,028.65

Step by Step Solution

1. Step 1: Write the proportion equation
   30,456.63 : 42,030.50 = 17,028.65 : x
2. Step 2: Convert to fraction form
   30,456.63/42,030.50 = 17,028.65/x
3. Step 3: Cross multiply
   30,456.63x = 42,030.50 × 17,028.65
4. Step 4: Simplify right side
   30,456.63x = 715,722,693.76
5. Step 5: Solve for x
   x = 715,722,693.76/30,456.63
6. Step 6: Final answer
   x = 23,499.73