Finding the Fourth Proportional to 42,117.46, 63,139 and 17,178.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,117.46 : 63,139 = 17,178.38 : x
2. Step 2: Convert to fraction form
   42,117.46/63,139 = 17,178.38/x
3. Step 3: Cross multiply
   42,117.46x = 63,139 × 17,178.38
4. Step 4: Simplify right side
   42,117.46x = 1,084,625,734.82
5. Step 5: Solve for x
   x = 1,084,625,734.82/42,117.46
6. Step 6: Final answer
   x = 25,752.40