Finding the Fourth Proportional to 67,940.57, 101,877.94 and 28,487.09

Step by Step Solution

1. Step 1: Write the proportion equation
   67,940.57 : 101,877.94 = 28,487.09 : x
2. Step 2: Convert to fraction form
   67,940.57/101,877.94 = 28,487.09/x
3. Step 3: Cross multiply
   67,940.57x = 101,877.94 × 28,487.09
4. Step 4: Simplify right side
   67,940.57x = 2,902,206,336.10
5. Step 5: Solve for x
   x = 2,902,206,336.10/67,940.57
6. Step 6: Final answer
   x = 42,716.84