Finding the Fourth Proportional to 65,405.91, 90,235.94 and 41,200.38

Step by Step Solution

1. Step 1: Write the proportion equation
   65,405.91 : 90,235.94 = 41,200.38 : x
2. Step 2: Convert to fraction form
   65,405.91/90,235.94 = 41,200.38/x
3. Step 3: Cross multiply
   65,405.91x = 90,235.94 × 41,200.38
4. Step 4: Simplify right side
   65,405.91x = 3,717,755,043.41
5. Step 5: Solve for x
   x = 3,717,755,043.41/65,405.91
6. Step 6: Final answer
   x = 56,841.27