Finding the Fourth Proportional to 43,233.50, 64,862.78 and 17,928.30

Step by Step Solution

1. Step 1: Write the proportion equation
   43,233.50 : 64,862.78 = 17,928.30 : x
2. Step 2: Convert to fraction form
   43,233.50/64,862.78 = 17,928.30/x
3. Step 3: Cross multiply
   43,233.50x = 64,862.78 × 17,928.30
4. Step 4: Simplify right side
   43,233.50x = 1,162,879,532.27
5. Step 5: Solve for x
   x = 1,162,879,532.27/43,233.50
6. Step 6: Final answer
   x = 26,897.65