Finding the Fourth Proportional to 123,875.79, 170,785.83 and 89,391.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123,875.79 : 170,785.83 = 89,391.52 : x
2. Step 2: Convert to fraction form
   123,875.79/170,785.83 = 89,391.52/x
3. Step 3: Cross multiply
   123,875.79x = 170,785.83 × 89,391.52
4. Step 4: Simplify right side
   123,875.79x = 15,266,804,938.16
5. Step 5: Solve for x
   x = 15,266,804,938.16/123,875.79
6. Step 6: Final answer
   x = 123,242.85