Finding the Fourth Proportional to 89,518.69, 123,538.89 and 49,235.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,518.69 : 123,538.89 = 49,235.50 : x
2. Step 2: Convert to fraction form
   89,518.69/123,538.89 = 49,235.50/x
3. Step 3: Cross multiply
   89,518.69x = 123,538.89 × 49,235.50
4. Step 4: Simplify right side
   89,518.69x = 6,082,498,894.38
5. Step 5: Solve for x
   x = 6,082,498,894.38/89,518.69
6. Step 6: Final answer
   x = 67,946.69