Finding the Fourth Proportional to 46,042.72, 69,057.24 and 12,759.31

Step by Step Solution

1. Step 1: Write the proportion equation
   46,042.72 : 69,057.24 = 12,759.31 : x
2. Step 2: Convert to fraction form
   46,042.72/69,057.24 = 12,759.31/x
3. Step 3: Cross multiply
   46,042.72x = 69,057.24 × 12,759.31
4. Step 4: Simplify right side
   46,042.72x = 881,122,819.23
5. Step 5: Solve for x
   x = 881,122,819.23/46,042.72
6. Step 6: Final answer
   x = 19,137.07