Finding the Fourth Proportional to 38,144.10, 57,142.34 and 21,453.42

Step by Step Solution

1. Step 1: Write the proportion equation
   38,144.10 : 57,142.34 = 21,453.42 : x
2. Step 2: Convert to fraction form
   38,144.10/57,142.34 = 21,453.42/x
3. Step 3: Cross multiply
   38,144.10x = 57,142.34 × 21,453.42
4. Step 4: Simplify right side
   38,144.10x = 1,225,898,387.72
5. Step 5: Solve for x
   x = 1,225,898,387.72/38,144.10
6. Step 6: Final answer
   x = 32,138.62