Finding the Fourth Proportional to 89,517.72, 123,537.20 and 49,235.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,517.72 : 123,537.20 = 49,235.60 : x
2. Step 2: Convert to fraction form
   89,517.72/123,537.20 = 49,235.60/x
3. Step 3: Cross multiply
   89,517.72x = 123,537.20 × 49,235.60
4. Step 4: Simplify right side
   89,517.72x = 6,082,428,164.32
5. Step 5: Solve for x
   x = 6,082,428,164.32/89,517.72
6. Step 6: Final answer
   x = 67,946.64