Finding the Fourth Proportional to 89,663.92, 123,736.56 and 53,854.54

Step by Step Solution

1. Step 1: Write the proportion equation
   89,663.92 : 123,736.56 = 53,854.54 : x
2. Step 2: Convert to fraction form
   89,663.92/123,736.56 = 53,854.54/x
3. Step 3: Cross multiply
   89,663.92x = 123,736.56 × 53,854.54
4. Step 4: Simplify right side
   89,663.92x = 6,663,775,519.98
5. Step 5: Solve for x
   x = 6,663,775,519.98/89,663.92
6. Step 6: Final answer
   x = 74,319.48