Finding the Fourth Proportional to 49,878.72, 68,839.20 and 34,761.60

Step by Step Solution

1. Step 1: Write the proportion equation
   49,878.72 : 68,839.20 = 34,761.60 : x
2. Step 2: Convert to fraction form
   49,878.72/68,839.20 = 34,761.60/x
3. Step 3: Cross multiply
   49,878.72x = 68,839.20 × 34,761.60
4. Step 4: Simplify right side
   49,878.72x = 2,392,960,734.72
5. Step 5: Solve for x
   x = 2,392,960,734.72/49,878.72
6. Step 6: Final answer
   x = 47,975.58