Finding the Fourth Proportional to 30,538.98, 42,144.21 and 17,109.99

Step by Step Solution

1. Step 1: Write the proportion equation
   30,538.98 : 42,144.21 = 17,109.99 : x
2. Step 2: Convert to fraction form
   30,538.98/42,144.21 = 17,109.99/x
3. Step 3: Cross multiply
   30,538.98x = 42,144.21 × 17,109.99
4. Step 4: Simplify right side
   30,538.98x = 721,087,011.66
5. Step 5: Solve for x
   x = 721,087,011.66/30,538.98
6. Step 6: Final answer
   x = 23,612.02