Finding the Fourth Proportional to 42,216.29, 63,349.30 and 15,581.03

Step by Step Solution

1. Step 1: Write the proportion equation
   42,216.29 : 63,349.30 = 15,581.03 : x
2. Step 2: Convert to fraction form
   42,216.29/63,349.30 = 15,581.03/x
3. Step 3: Cross multiply
   42,216.29x = 63,349.30 × 15,581.03
4. Step 4: Simplify right side
   42,216.29x = 987,047,343.78
5. Step 5: Solve for x
   x = 987,047,343.78/42,216.29
6. Step 6: Final answer
   x = 23,380.72