Finding the Fourth Proportional to 30,478.72, 42,064.14 and 17,053.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,478.72 : 42,064.14 = 17,053.38 : x
2. Step 2: Convert to fraction form
   30,478.72/42,064.14 = 17,053.38/x
3. Step 3: Cross multiply
   30,478.72x = 42,064.14 × 17,053.38
4. Step 4: Simplify right side
   30,478.72x = 717,335,763.79
5. Step 5: Solve for x
   x = 717,335,763.79/30,478.72
6. Step 6: Final answer
   x = 23,535.63