Finding the Fourth Proportional to 53,284.50, 73,539.90 and 30,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,284.50 : 73,539.90 = 30,928.50 : x
2. Step 2: Convert to fraction form
   53,284.50/73,539.90 = 30,928.50/x
3. Step 3: Cross multiply
   53,284.50x = 73,539.90 × 30,928.50
4. Step 4: Simplify right side
   53,284.50x = 2,274,478,797.15
5. Step 5: Solve for x
   x = 2,274,478,797.15/53,284.50
6. Step 6: Final answer
   x = 42,685.56