Finding the Fourth Proportional to 30,870.98, 42,602.08 and 17,442.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,870.98 : 42,602.08 = 17,442.38 : x
2. Step 2: Convert to fraction form
   30,870.98/42,602.08 = 17,442.38/x
3. Step 3: Cross multiply
   30,870.98x = 42,602.08 × 17,442.38
4. Step 4: Simplify right side
   30,870.98x = 743,081,668.15
5. Step 5: Solve for x
   x = 743,081,668.15/30,870.98
6. Step 6: Final answer
   x = 24,070.56