Finding the Fourth Proportional to 42,207.72, 63,320.94 and 15,912.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,207.72 : 63,320.94 = 15,912.69 : x
2. Step 2: Convert to fraction form
   42,207.72/63,320.94 = 15,912.69/x
3. Step 3: Cross multiply
   42,207.72x = 63,320.94 × 15,912.69
4. Step 4: Simplify right side
   42,207.72x = 1,007,606,488.73
5. Step 5: Solve for x
   x = 1,007,606,488.73/42,207.72
6. Step 6: Final answer
   x = 23,872.56