Finding the Fourth Proportional to 49,618.78, 68,434.30 and 32,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,618.78 : 68,434.30 = 32,640.50 : x
2. Step 2: Convert to fraction form
   49,618.78/68,434.30 = 32,640.50/x
3. Step 3: Cross multiply
   49,618.78x = 68,434.30 × 32,640.50
4. Step 4: Simplify right side
   49,618.78x = 2,233,729,981.04
5. Step 5: Solve for x
   x = 2,233,729,981.04/49,618.78
6. Step 6: Final answer
   x = 45,017.84