Finding the Fourth Proportional to 43,042.08, 64,560.69 and 13,456.43

Step by Step Solution

1. Step 1: Write the proportion equation
   43,042.08 : 64,560.69 = 13,456.43 : x
2. Step 2: Convert to fraction form
   43,042.08/64,560.69 = 13,456.43/x
3. Step 3: Cross multiply
   43,042.08x = 64,560.69 × 13,456.43
4. Step 4: Simplify right side
   43,042.08x = 868,756,015.65
5. Step 5: Solve for x
   x = 868,756,015.65/43,042.08
6. Step 6: Final answer
   x = 20,183.88