Finding the Fourth Proportional to 124,003.41, 170,821 and 89,911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   124,003.41 : 170,821 = 89,911.72 : x
2. Step 2: Convert to fraction form
   124,003.41/170,821 = 89,911.72/x
3. Step 3: Cross multiply
   124,003.41x = 170,821 × 89,911.72
4. Step 4: Simplify right side
   124,003.41x = 15,358,809,922.12
5. Step 5: Solve for x
   x = 15,358,809,922.12/124,003.41
6. Step 6: Final answer
   x = 123,857.96