Finding the Fourth Proportional to 43,124.72, 64,665.16 and 19,731.11

Step by Step Solution

1. Step 1: Write the proportion equation
   43,124.72 : 64,665.16 = 19,731.11 : x
2. Step 2: Convert to fraction form
   43,124.72/64,665.16 = 19,731.11/x
3. Step 3: Cross multiply
   43,124.72x = 64,665.16 × 19,731.11
4. Step 4: Simplify right side
   43,124.72x = 1,275,915,012.47
5. Step 5: Solve for x
   x = 1,275,915,012.47/43,124.72
6. Step 6: Final answer
   x = 29,586.63