Finding the Fourth Proportional to 43,404.32, 65,111.25 and 13,815.23

Step by Step Solution

1. Step 1: Write the proportion equation
   43,404.32 : 65,111.25 = 13,815.23 : x
2. Step 2: Convert to fraction form
   43,404.32/65,111.25 = 13,815.23/x
3. Step 3: Cross multiply
   43,404.32x = 65,111.25 × 13,815.23
4. Step 4: Simplify right side
   43,404.32x = 899,526,568.78
5. Step 5: Solve for x
   x = 899,526,568.78/43,404.32
6. Step 6: Final answer
   x = 20,724.36