Finding the Fourth Proportional to 123,589.29, 170,528.07 and 72,610.32

Step by Step Solution

1. Step 1: Write the proportion equation
   123,589.29 : 170,528.07 = 72,610.32 : x
2. Step 2: Convert to fraction form
   123,589.29/170,528.07 = 72,610.32/x
3. Step 3: Cross multiply
   123,589.29x = 170,528.07 × 72,610.32
4. Step 4: Simplify right side
   123,589.29x = 12,382,096,942.31
5. Step 5: Solve for x
   x = 12,382,096,942.31/123,589.29
6. Step 6: Final answer
   x = 100,187.46