Finding the Fourth Proportional to 89,078.83, 122,894.57 and 50,840.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,078.83 : 122,894.57 = 50,840.50 : x
2. Step 2: Convert to fraction form
   89,078.83/122,894.57 = 50,840.50/x
3. Step 3: Cross multiply
   89,078.83x = 122,894.57 × 50,840.50
4. Step 4: Simplify right side
   89,078.83x = 6,248,021,150.40
5. Step 5: Solve for x
   x = 6,248,021,150.40/89,078.83
6. Step 6: Final answer
   x = 70,140.36