Finding the Fourth Proportional to 113,008.11, 155,940.50 and 67,685.31

Step by Step Solution

1. Step 1: Write the proportion equation
   113,008.11 : 155,940.50 = 67,685.31 : x
2. Step 2: Convert to fraction form
   113,008.11/155,940.50 = 67,685.31/x
3. Step 3: Cross multiply
   113,008.11x = 155,940.50 × 67,685.31
4. Step 4: Simplify right side
   113,008.11x = 10,554,880,745.63
5. Step 5: Solve for x
   x = 10,554,880,745.63/113,008.11
6. Step 6: Final answer
   x = 93,399.32