Finding the Fourth Proportional to 89,820, 123,949.94 and 49,537.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,820 : 123,949.94 = 49,537.50 : x
2. Step 2: Convert to fraction form
   89,820/123,949.94 = 49,537.50/x
3. Step 3: Cross multiply
   89,820x = 123,949.94 × 49,537.50
4. Step 4: Simplify right side
   89,820x = 6,140,170,152.75
5. Step 5: Solve for x
   x = 6,140,170,152.75/89,820
6. Step 6: Final answer
   x = 68,360.83