Finding the Fourth Proportional to 43,359.79, 65,069.25 and 19,986.43

Step by Step Solution

1. Step 1: Write the proportion equation
   43,359.79 : 65,069.25 = 19,986.43 : x
2. Step 2: Convert to fraction form
   43,359.79/65,069.25 = 19,986.43/x
3. Step 3: Cross multiply
   43,359.79x = 65,069.25 × 19,986.43
4. Step 4: Simplify right side
   43,359.79x = 1,300,502,010.28
5. Step 5: Solve for x
   x = 1,300,502,010.28/43,359.79
6. Step 6: Final answer
   x = 29,993.27