Finding the Fourth Proportional to 30,764.31, 42,449.58 and 17,149.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,764.31 : 42,449.58 = 17,149.38 : x
2. Step 2: Convert to fraction form
   30,764.31/42,449.58 = 17,149.38/x
3. Step 3: Cross multiply
   30,764.31x = 42,449.58 × 17,149.38
4. Step 4: Simplify right side
   30,764.31x = 727,983,978.26
5. Step 5: Solve for x
   x = 727,983,978.26/30,764.31
6. Step 6: Final answer
   x = 23,663.26