Finding the Fourth Proportional to 89,673.17, 123,749.33 and 53,863.79

Step by Step Solution

1. Step 1: Write the proportion equation
   89,673.17 : 123,749.33 = 53,863.79 : x
2. Step 2: Convert to fraction form
   89,673.17/123,749.33 = 53,863.79/x
3. Step 3: Cross multiply
   89,673.17x = 123,749.33 × 53,863.79
4. Step 4: Simplify right side
   89,673.17x = 6,665,607,035.70
5. Step 5: Solve for x
   x = 6,665,607,035.70/89,673.17
6. Step 6: Final answer
   x = 74,332.24