Finding the Fourth Proportional to 30,619.49, 42,255.54 and 17,191.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,619.49 : 42,255.54 = 17,191.98 : x
2. Step 2: Convert to fraction form
   30,619.49/42,255.54 = 17,191.98/x
3. Step 3: Cross multiply
   30,619.49x = 42,255.54 × 17,191.98
4. Step 4: Simplify right side
   30,619.49x = 726,456,398.57
5. Step 5: Solve for x
   x = 726,456,398.57/30,619.49
6. Step 6: Final answer
   x = 23,725.30