Finding the Fourth Proportional to 50,105.20, 74,765.72 and 49,813.60

Step by Step Solution

1. Step 1: Write the proportion equation
   50,105.20 : 74,765.72 = 49,813.60 : x
2. Step 2: Convert to fraction form
   50,105.20/74,765.72 = 49,813.60/x
3. Step 3: Cross multiply
   50,105.20x = 74,765.72 × 49,813.60
4. Step 4: Simplify right side
   50,105.20x = 3,724,349,669.79
5. Step 5: Solve for x
   x = 3,724,349,669.79/50,105.20
6. Step 6: Final answer
   x = 74,330.60