Finding the Fourth Proportional to 89,519.99, 123,496.04 and 53,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,519.99 : 123,496.04 = 53,647.72 : x
2. Step 2: Convert to fraction form
   89,519.99/123,496.04 = 53,647.72/x
3. Step 3: Cross multiply
   89,519.99x = 123,496.04 × 53,647.72
4. Step 4: Simplify right side
   89,519.99x = 6,625,280,800.41
5. Step 5: Solve for x
   x = 6,625,280,800.41/89,519.99
6. Step 6: Final answer
   x = 74,008.96