Finding the Fourth Proportional to 43,689, 65,516.84 and 15,603.82

Step by Step Solution

1. Step 1: Write the proportion equation
   43,689 : 65,516.84 = 15,603.82 : x
2. Step 2: Convert to fraction form
   43,689/65,516.84 = 15,603.82/x
3. Step 3: Cross multiply
   43,689x = 65,516.84 × 15,603.82
4. Step 4: Simplify right side
   43,689x = 1,022,312,978.33
5. Step 5: Solve for x
   x = 1,022,312,978.33/43,689
6. Step 6: Final answer
   x = 23,399.78