Finding the Fourth Proportional to 67,390.05, 100,874.72 and 49,640.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67,390.05 : 100,874.72 = 49,640.72 : x
2. Step 2: Convert to fraction form
   67,390.05/100,874.72 = 49,640.72/x
3. Step 3: Cross multiply
   67,390.05x = 100,874.72 × 49,640.72
4. Step 4: Simplify right side
   67,390.05x = 5,007,493,730.60
5. Step 5: Solve for x
   x = 5,007,493,730.60/67,390.05
6. Step 6: Final answer
   x = 74,306.13