Finding the Fourth Proportional to 43,471.64, 65,175.57 and 13,872.42

Step by Step Solution

1. Step 1: Write the proportion equation
   43,471.64 : 65,175.57 = 13,872.42 : x
2. Step 2: Convert to fraction form
   43,471.64/65,175.57 = 13,872.42/x
3. Step 3: Cross multiply
   43,471.64x = 65,175.57 × 13,872.42
4. Step 4: Simplify right side
   43,471.64x = 904,142,880.78
5. Step 5: Solve for x
   x = 904,142,880.78/43,471.64
6. Step 6: Final answer
   x = 20,798.45