Finding the Fourth Proportional to 89,862.89, 123,955.85 and 57,586.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,862.89 : 123,955.85 = 57,586.68 : x
2. Step 2: Convert to fraction form
   89,862.89/123,955.85 = 57,586.68/x
3. Step 3: Cross multiply
   89,862.89x = 123,955.85 × 57,586.68
4. Step 4: Simplify right side
   89,862.89x = 7,138,206,012.04
5. Step 5: Solve for x
   x = 7,138,206,012.04/89,862.89
6. Step 6: Final answer
   x = 79,434.42