Finding the Fourth Proportional to 124,983.74, 172,298.04 and 89,111.54

Step by Step Solution

1. Step 1: Write the proportion equation
   124,983.74 : 172,298.04 = 89,111.54 : x
2. Step 2: Convert to fraction form
   124,983.74/172,298.04 = 89,111.54/x
3. Step 3: Cross multiply
   124,983.74x = 172,298.04 × 89,111.54
4. Step 4: Simplify right side
   124,983.74x = 15,353,743,683.38
5. Step 5: Solve for x
   x = 15,353,743,683.38/124,983.74
6. Step 6: Final answer
   x = 122,845.93