Finding the Fourth Proportional to 80,538.69, 111,262.77 and 53,008.28

Step by Step Solution

1. Step 1: Write the proportion equation
   80,538.69 : 111,262.77 = 53,008.28 : x
2. Step 2: Convert to fraction form
   80,538.69/111,262.77 = 53,008.28/x
3. Step 3: Cross multiply
   80,538.69x = 111,262.77 × 53,008.28
4. Step 4: Simplify right side
   80,538.69x = 5,897,848,065.74
5. Step 5: Solve for x
   x = 5,897,848,065.74/80,538.69
6. Step 6: Final answer
   x = 73,230.00