Finding the Fourth Proportional to 42,215.58, 63,318.51 and 17,238.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,215.58 : 63,318.51 = 17,238.42 : x
2. Step 2: Convert to fraction form
   42,215.58/63,318.51 = 17,238.42/x
3. Step 3: Cross multiply
   42,215.58x = 63,318.51 × 17,238.42
4. Step 4: Simplify right side
   42,215.58x = 1,091,511,069.15
5. Step 5: Solve for x
   x = 1,091,511,069.15/42,215.58
6. Step 6: Final answer
   x = 25,855.65