Finding the Fourth Proportional to 65,152.96, 89,934.28 and 39,647.68

Step by Step Solution

1. Step 1: Write the proportion equation
   65,152.96 : 89,934.28 = 39,647.68 : x
2. Step 2: Convert to fraction form
   65,152.96/89,934.28 = 39,647.68/x
3. Step 3: Cross multiply
   65,152.96x = 89,934.28 × 39,647.68
4. Step 4: Simplify right side
   65,152.96x = 3,565,685,554.47
5. Step 5: Solve for x
   x = 3,565,685,554.47/65,152.96
6. Step 6: Final answer
   x = 54,727.91