Finding the Fourth Proportional to 42,086.30, 63,129.54 and 17,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,086.30 : 63,129.54 = 17,108.72 : x
2. Step 2: Convert to fraction form
   42,086.30/63,129.54 = 17,108.72/x
3. Step 3: Cross multiply
   42,086.30x = 63,129.54 × 17,108.72
4. Step 4: Simplify right side
   42,086.30x = 1,080,065,623.59
5. Step 5: Solve for x
   x = 1,080,065,623.59/42,086.30
6. Step 6: Final answer
   x = 25,663.12