Finding the Fourth Proportional to 30,665.98, 42,322.54 and 17,055.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,665.98 : 42,322.54 = 17,055.38 : x
2. Step 2: Convert to fraction form
   30,665.98/42,322.54 = 17,055.38/x
3. Step 3: Cross multiply
   30,665.98x = 42,322.54 × 17,055.38
4. Step 4: Simplify right side
   30,665.98x = 721,827,002.27
5. Step 5: Solve for x
   x = 721,827,002.27/30,665.98
6. Step 6: Final answer
   x = 23,538.36