Finding the Fourth Proportional to 124,007.78, 170,827.04 and 89,916.10

Step by Step Solution

1. Step 1: Write the proportion equation
   124,007.78 : 170,827.04 = 89,916.10 : x
2. Step 2: Convert to fraction form
   124,007.78/170,827.04 = 89,916.10/x
3. Step 3: Cross multiply
   124,007.78x = 170,827.04 × 89,916.10
4. Step 4: Simplify right side
   124,007.78x = 15,360,101,211.34
5. Step 5: Solve for x
   x = 15,360,101,211.34/124,007.78
6. Step 6: Final answer
   x = 123,864.01