Finding the Fourth Proportional to 43,142.30, 64,713.41 and 13,562.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,142.30 : 64,713.41 = 13,562.72 : x
2. Step 2: Convert to fraction form
   43,142.30/64,713.41 = 13,562.72/x
3. Step 3: Cross multiply
   43,142.30x = 64,713.41 × 13,562.72
4. Step 4: Simplify right side
   43,142.30x = 877,689,792.26
5. Step 5: Solve for x
   x = 877,689,792.26/43,142.30
6. Step 6: Final answer
   x = 20,344.07