Finding the Fourth Proportional to 30,494.78, 42,081.28 and 17,066.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,494.78 : 42,081.28 = 17,066.06 : x
2. Step 2: Convert to fraction form
   30,494.78/42,081.28 = 17,066.06/x
3. Step 3: Cross multiply
   30,494.78x = 42,081.28 × 17,066.06
4. Step 4: Simplify right side
   30,494.78x = 718,161,396.29
5. Step 5: Solve for x
   x = 718,161,396.29/30,494.78
6. Step 6: Final answer
   x = 23,550.31