Finding the Fourth Proportional to 89,268.56, 123,037.20 and 85,064.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,268.56 : 123,037.20 = 85,064.39 : x
2. Step 2: Convert to fraction form
   89,268.56/123,037.20 = 85,064.39/x
3. Step 3: Cross multiply
   89,268.56x = 123,037.20 × 85,064.39
4. Step 4: Simplify right side
   89,268.56x = 10,466,084,623.78
5. Step 5: Solve for x
   x = 10,466,084,623.78/89,268.56
6. Step 6: Final answer
   x = 117,242.68