Finding the Fourth Proportional to 86,940.54, 119,978.82 and 49,207.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,940.54 : 119,978.82 = 49,207.50 : x
2. Step 2: Convert to fraction form
   86,940.54/119,978.82 = 49,207.50/x
3. Step 3: Cross multiply
   86,940.54x = 119,978.82 × 49,207.50
4. Step 4: Simplify right side
   86,940.54x = 5,903,857,785.15
5. Step 5: Solve for x
   x = 5,903,857,785.15/86,940.54
6. Step 6: Final answer
   x = 67,906.85