Finding the Fourth Proportional to 30,744.05, 42,430.79 and 17,317.89

Step by Step Solution

1. Step 1: Write the proportion equation
   30,744.05 : 42,430.79 = 17,317.89 : x
2. Step 2: Convert to fraction form
   30,744.05/42,430.79 = 17,317.89/x
3. Step 3: Cross multiply
   30,744.05x = 42,430.79 × 17,317.89
4. Step 4: Simplify right side
   30,744.05x = 734,811,667.24
5. Step 5: Solve for x
   x = 734,811,667.24/30,744.05
6. Step 6: Final answer
   x = 23,900.94