Finding the Fourth Proportional to 89,665.23, 123,797.56 and 55,724.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,665.23 : 123,797.56 = 55,724.36 : x
2. Step 2: Convert to fraction form
   89,665.23/123,797.56 = 55,724.36/x
3. Step 3: Cross multiply
   89,665.23x = 123,797.56 × 55,724.36
4. Step 4: Simplify right side
   89,665.23x = 6,898,538,990.02
5. Step 5: Solve for x
   x = 6,898,538,990.02/89,665.23
6. Step 6: Final answer
   x = 76,936.61