Finding the Fourth Proportional to 123,269.16, 170,112.24 and 72,270.48

Step by Step Solution

1. Step 1: Write the proportion equation
   123,269.16 : 170,112.24 = 72,270.48 : x
2. Step 2: Convert to fraction form
   123,269.16/170,112.24 = 72,270.48/x
3. Step 3: Cross multiply
   123,269.16x = 170,112.24 × 72,270.48
4. Step 4: Simplify right side
   123,269.16x = 12,294,093,238.68
5. Step 5: Solve for x
   x = 12,294,093,238.68/123,269.16
6. Step 6: Final answer
   x = 99,733.73