Finding the Fourth Proportional to 73,200.33, 109,722.72 and 28,820.97

Step by Step Solution

1. Step 1: Write the proportion equation
   73,200.33 : 109,722.72 = 28,820.97 : x
2. Step 2: Convert to fraction form
   73,200.33/109,722.72 = 28,820.97/x
3. Step 3: Cross multiply
   73,200.33x = 109,722.72 × 28,820.97
4. Step 4: Simplify right side
   73,200.33x = 3,162,315,221.44
5. Step 5: Solve for x
   x = 3,162,315,221.44/73,200.33
6. Step 6: Final answer
   x = 43,200.83