Finding the Fourth Proportional to 67,642.40, 93,383.72 and 50,640.48

Step by Step Solution

1. Step 1: Write the proportion equation
   67,642.40 : 93,383.72 = 50,640.48 : x
2. Step 2: Convert to fraction form
   67,642.40/93,383.72 = 50,640.48/x
3. Step 3: Cross multiply
   67,642.40x = 93,383.72 × 50,640.48
4. Step 4: Simplify right side
   67,642.40x = 4,728,996,404.99
5. Step 5: Solve for x
   x = 4,728,996,404.99/67,642.40
6. Step 6: Final answer
   x = 69,911.72