Finding the Fourth Proportional to 42,139.05, 63,171.46 and 17,200.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,139.05 : 63,171.46 = 17,200.06 : x
2. Step 2: Convert to fraction form
   42,139.05/63,171.46 = 17,200.06/x
3. Step 3: Cross multiply
   42,139.05x = 63,171.46 × 17,200.06
4. Step 4: Simplify right side
   42,139.05x = 1,086,552,765.86
5. Step 5: Solve for x
   x = 1,086,552,765.86/42,139.05
6. Step 6: Final answer
   x = 25,784.94