Finding the Fourth Proportional to 30,570.18, 42,186.11 and 17,141.39

Step by Step Solution

1. Step 1: Write the proportion equation
   30,570.18 : 42,186.11 = 17,141.39 : x
2. Step 2: Convert to fraction form
   30,570.18/42,186.11 = 17,141.39/x
3. Step 3: Cross multiply
   30,570.18x = 42,186.11 × 17,141.39
4. Step 4: Simplify right side
   30,570.18x = 723,128,267.46
5. Step 5: Solve for x
   x = 723,128,267.46/30,570.18
6. Step 6: Final answer
   x = 23,654.69