Finding the Fourth Proportional to 65,822.38, 90,828.72 and 40,317.10

Step by Step Solution

1. Step 1: Write the proportion equation
   65,822.38 : 90,828.72 = 40,317.10 : x
2. Step 2: Convert to fraction form
   65,822.38/90,828.72 = 40,317.10/x
3. Step 3: Cross multiply
   65,822.38x = 90,828.72 × 40,317.10
4. Step 4: Simplify right side
   65,822.38x = 3,661,950,587.11
5. Step 5: Solve for x
   x = 3,661,950,587.11/65,822.38
6. Step 6: Final answer
   x = 55,633.82