Finding the Fourth Proportional to 49,861.38, 69,105.78 and 48,928.26

Step by Step Solution

1. Step 1: Write the proportion equation
   49,861.38 : 69,105.78 = 48,928.26 : x
2. Step 2: Convert to fraction form
   49,861.38/69,105.78 = 48,928.26/x
3. Step 3: Cross multiply
   49,861.38x = 69,105.78 × 48,928.26
4. Step 4: Simplify right side
   49,861.38x = 3,381,225,571.34
5. Step 5: Solve for x
   x = 3,381,225,571.34/49,861.38
6. Step 6: Final answer
   x = 67,812.51