Finding the Fourth Proportional to 30,538.83, 42,142.42 and 17,109.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,538.83 : 42,142.42 = 17,109.42 : x
2. Step 2: Convert to fraction form
   30,538.83/42,142.42 = 17,109.42/x
3. Step 3: Cross multiply
   30,538.83x = 42,142.42 × 17,109.42
4. Step 4: Simplify right side
   30,538.83x = 721,032,226.95
5. Step 5: Solve for x
   x = 721,032,226.95/30,538.83
6. Step 6: Final answer
   x = 23,610.34