Finding the Fourth Proportional to 67,879.84, 93,678.62 and 39,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67,879.84 : 93,678.62 = 39,200.72 : x
2. Step 2: Convert to fraction form
   67,879.84/93,678.62 = 39,200.72/x
3. Step 3: Cross multiply
   67,879.84x = 93,678.62 × 39,200.72
4. Step 4: Simplify right side
   67,879.84x = 3,672,269,352.61
5. Step 5: Solve for x
   x = 3,672,269,352.61/67,879.84
6. Step 6: Final answer
   x = 54,099.56