Finding the Fourth Proportional to 63,138.72, 94,688.52 and 21,576

Step by Step Solution

1. Step 1: Write the proportion equation
   63,138.72 : 94,688.52 = 21,576 : x
2. Step 2: Convert to fraction form
   63,138.72/94,688.52 = 21,576/x
3. Step 3: Cross multiply
   63,138.72x = 94,688.52 × 21,576
4. Step 4: Simplify right side
   63,138.72x = 2,042,999,507.52
5. Step 5: Solve for x
   x = 2,042,999,507.52/63,138.72
6. Step 6: Final answer
   x = 32,357.32