Finding the Fourth Proportional to 42,105.45, 63,121.02 and 17,166.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,105.45 : 63,121.02 = 17,166.36 : x
2. Step 2: Convert to fraction form
   42,105.45/63,121.02 = 17,166.36/x
3. Step 3: Cross multiply
   42,105.45x = 63,121.02 × 17,166.36
4. Step 4: Simplify right side
   42,105.45x = 1,083,558,152.89
5. Step 5: Solve for x
   x = 1,083,558,152.89/42,105.45
6. Step 6: Final answer
   x = 25,734.39