Finding the Fourth Proportional to 89,718.18, 123,801.81 and 55,257.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,718.18 : 123,801.81 = 55,257.42 : x
2. Step 2: Convert to fraction form
   89,718.18/123,801.81 = 55,257.42/x
3. Step 3: Cross multiply
   89,718.18x = 123,801.81 × 55,257.42
4. Step 4: Simplify right side
   89,718.18x = 6,840,968,611.93
5. Step 5: Solve for x
   x = 6,840,968,611.93/89,718.18
6. Step 6: Final answer
   x = 76,249.53