Finding the Fourth Proportional to 89,284.66, 123,216.69 and 53,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,284.66 : 123,216.69 = 53,480.50 : x
2. Step 2: Convert to fraction form
   89,284.66/123,216.69 = 53,480.50/x
3. Step 3: Cross multiply
   89,284.66x = 123,216.69 × 53,480.50
4. Step 4: Simplify right side
   89,284.66x = 6,589,690,189.55
5. Step 5: Solve for x
   x = 6,589,690,189.55/89,284.66
6. Step 6: Final answer
   x = 73,805.40