Finding the Fourth Proportional to 42,604.88, 63,915.53 and 19,231.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,604.88 : 63,915.53 = 19,231.34 : x
2. Step 2: Convert to fraction form
   42,604.88/63,915.53 = 19,231.34/x
3. Step 3: Cross multiply
   42,604.88x = 63,915.53 × 19,231.34
4. Step 4: Simplify right side
   42,604.88x = 1,229,180,872.98
5. Step 5: Solve for x
   x = 1,229,180,872.98/42,604.88
6. Step 6: Final answer
   x = 28,850.71