Finding the Fourth Proportional to 42,188.72, 63,220.43 and 17,198.19

Step by Step Solution

1. Step 1: Write the proportion equation
   42,188.72 : 63,220.43 = 17,198.19 : x
2. Step 2: Convert to fraction form
   42,188.72/63,220.43 = 17,198.19/x
3. Step 3: Cross multiply
   42,188.72x = 63,220.43 × 17,198.19
4. Step 4: Simplify right side
   42,188.72x = 1,087,277,010.02
5. Step 5: Solve for x
   x = 1,087,277,010.02/42,188.72
6. Step 6: Final answer
   x = 25,771.75