Finding the Fourth Proportional to 89,685.23, 123,765.72 and 49,399.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,685.23 : 123,765.72 = 49,399.08 : x
2. Step 2: Convert to fraction form
   89,685.23/123,765.72 = 49,399.08/x
3. Step 3: Cross multiply
   89,685.23x = 123,765.72 × 49,399.08
4. Step 4: Simplify right side
   89,685.23x = 6,113,913,028.22
5. Step 5: Solve for x
   x = 6,113,913,028.22/89,685.23
6. Step 6: Final answer
   x = 68,170.79