Finding the Fourth Proportional to 67,091.41, 92,578.71 and 40,235.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67,091.41 : 92,578.71 = 40,235.05 : x
2. Step 2: Convert to fraction form
   67,091.41/92,578.71 = 40,235.05/x
3. Step 3: Cross multiply
   67,091.41x = 92,578.71 × 40,235.05
4. Step 4: Simplify right side
   67,091.41x = 3,724,909,025.79
5. Step 5: Solve for x
   x = 3,724,909,025.79/67,091.41
6. Step 6: Final answer
   x = 55,519.91