Finding the Fourth Proportional to 30,538.62, 42,146.01 and 17,109.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,538.62 : 42,146.01 = 17,109.79 : x
2. Step 2: Convert to fraction form
   30,538.62/42,146.01 = 17,109.79/x
3. Step 3: Cross multiply
   30,538.62x = 42,146.01 × 17,109.79
4. Step 4: Simplify right side
   30,538.62x = 721,109,275.07
5. Step 5: Solve for x
   x = 721,109,275.07/30,538.62
6. Step 6: Final answer
   x = 23,613.03