Finding the Fourth Proportional to 88,997.78, 122,817 and 48,711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,997.78 : 122,817 = 48,711.50 : x
2. Step 2: Convert to fraction form
   88,997.78/122,817 = 48,711.50/x
3. Step 3: Cross multiply
   88,997.78x = 122,817 × 48,711.50
4. Step 4: Simplify right side
   88,997.78x = 5,982,600,295.50
5. Step 5: Solve for x
   x = 5,982,600,295.50/88,997.78
6. Step 6: Final answer
   x = 67,221.90