Finding the Fourth Proportional to 89,441.12, 123,401.79 and 53,618.06

Step by Step Solution

1. Step 1: Write the proportion equation
   89,441.12 : 123,401.79 = 53,618.06 : x
2. Step 2: Convert to fraction form
   89,441.12/123,401.79 = 53,618.06/x
3. Step 3: Cross multiply
   89,441.12x = 123,401.79 × 53,618.06
4. Step 4: Simplify right side
   89,441.12x = 6,616,564,580.33
5. Step 5: Solve for x
   x = 6,616,564,580.33/89,441.12
6. Step 6: Final answer
   x = 73,976.76