Finding the Fourth Proportional to 86,248.18, 118,978.94 and 50,414.78

Step by Step Solution

1. Step 1: Write the proportion equation
   86,248.18 : 118,978.94 = 50,414.78 : x
2. Step 2: Convert to fraction form
   86,248.18/118,978.94 = 50,414.78/x
3. Step 3: Cross multiply
   86,248.18x = 118,978.94 × 50,414.78
4. Step 4: Simplify right side
   86,248.18x = 5,998,297,084.73
5. Step 5: Solve for x
   x = 5,998,297,084.73/86,248.18
6. Step 6: Final answer
   x = 69,546.94