Finding the Fourth Proportional to 123,540.66, 170,429.54 and 72,552.51

Step by Step Solution

1. Step 1: Write the proportion equation
   123,540.66 : 170,429.54 = 72,552.51 : x
2. Step 2: Convert to fraction form
   123,540.66/170,429.54 = 72,552.51/x
3. Step 3: Cross multiply
   123,540.66x = 170,429.54 × 72,552.51
4. Step 4: Simplify right side
   123,540.66x = 12,365,090,542.38
5. Step 5: Solve for x
   x = 12,365,090,542.38/123,540.66
6. Step 6: Final answer
   x = 100,089.24