Finding the Fourth Proportional to 89,863.89, 123,957.23 and 57,587.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,863.89 : 123,957.23 = 57,587.68 : x
2. Step 2: Convert to fraction form
   89,863.89/123,957.23 = 57,587.68/x
3. Step 3: Cross multiply
   89,863.89x = 123,957.23 × 57,587.68
4. Step 4: Simplify right side
   89,863.89x = 7,138,409,294.93
5. Step 5: Solve for x
   x = 7,138,409,294.93/89,863.89
6. Step 6: Final answer
   x = 79,435.79