Finding the Fourth Proportional to 89,789.78, 123,915.48 and 49,503.48

Step by Step Solution

1. Step 1: Write the proportion equation
   89,789.78 : 123,915.48 = 49,503.48 : x
2. Step 2: Convert to fraction form
   89,789.78/123,915.48 = 49,503.48/x
3. Step 3: Cross multiply
   89,789.78x = 123,915.48 × 49,503.48
4. Step 4: Simplify right side
   89,789.78x = 6,134,247,485.87
5. Step 5: Solve for x
   x = 6,134,247,485.87/89,789.78
6. Step 6: Final answer
   x = 68,317.88