Finding the Fourth Proportional to 89,268.81, 123,037.55 and 85,064.64

Step by Step Solution

1. Step 1: Write the proportion equation
   89,268.81 : 123,037.55 = 85,064.64 : x
2. Step 2: Convert to fraction form
   89,268.81/123,037.55 = 85,064.64/x
3. Step 3: Cross multiply
   89,268.81x = 123,037.55 × 85,064.64
4. Step 4: Simplify right side
   89,268.81x = 10,466,144,684.57
5. Step 5: Solve for x
   x = 10,466,144,684.57/89,268.81
6. Step 6: Final answer
   x = 117,243.02