Finding the Fourth Proportional to 30,538.11, 42,142.08 and 17,109.33

Step by Step Solution

1. Step 1: Write the proportion equation
   30,538.11 : 42,142.08 = 17,109.33 : x
2. Step 2: Convert to fraction form
   30,538.11/42,142.08 = 17,109.33/x
3. Step 3: Cross multiply
   30,538.11x = 42,142.08 × 17,109.33
4. Step 4: Simplify right side
   30,538.11x = 721,022,753.61
5. Step 5: Solve for x
   x = 721,022,753.61/30,538.11
6. Step 6: Final answer
   x = 23,610.59