Finding the Fourth Proportional to 30,499.38, 42,089.49 and 17,071.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,499.38 : 42,089.49 = 17,071.92 : x
2. Step 2: Convert to fraction form
   30,499.38/42,089.49 = 17,071.92/x
3. Step 3: Cross multiply
   30,499.38x = 42,089.49 × 17,071.92
4. Step 4: Simplify right side
   30,499.38x = 718,548,406.12
5. Step 5: Solve for x
   x = 718,548,406.12/30,499.38
6. Step 6: Final answer
   x = 23,559.44