Finding the Fourth Proportional to 42,017.16, 63,035.46 and 18,645.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017.16 : 63,035.46 = 18,645.42 : x
2. Step 2: Convert to fraction form
   42,017.16/63,035.46 = 18,645.42/x
3. Step 3: Cross multiply
   42,017.16x = 63,035.46 × 18,645.42
4. Step 4: Simplify right side
   42,017.16x = 1,175,322,626.59
5. Step 5: Solve for x
   x = 1,175,322,626.59/42,017.16
6. Step 6: Final answer
   x = 27,972.44