Finding the Fourth Proportional to 67,728.49, 93,468.66 and 40,870.54

Step by Step Solution

1. Step 1: Write the proportion equation
   67,728.49 : 93,468.66 = 40,870.54 : x
2. Step 2: Convert to fraction form
   67,728.49/93,468.66 = 40,870.54/x
3. Step 3: Cross multiply
   67,728.49x = 93,468.66 × 40,870.54
4. Step 4: Simplify right side
   67,728.49x = 3,820,114,607.28
5. Step 5: Solve for x
   x = 3,820,114,607.28/67,728.49
6. Step 6: Final answer
   x = 56,403.36