Finding the Fourth Proportional to 123,357.04, 170,214.28 and 72,350.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123,357.04 : 170,214.28 = 72,350.53 : x
2. Step 2: Convert to fraction form
   123,357.04/170,214.28 = 72,350.53/x
3. Step 3: Cross multiply
   123,357.04x = 170,214.28 × 72,350.53
4. Step 4: Simplify right side
   123,357.04x = 12,315,093,371.57
5. Step 5: Solve for x
   x = 12,315,093,371.57/123,357.04
6. Step 6: Final answer
   x = 99,832.92