Finding the Fourth Proportional to 103,628.72, 155,445.24 and 33,515.12

Step by Step Solution

1. Step 1: Write the proportion equation
   103,628.72 : 155,445.24 = 33,515.12 : x
2. Step 2: Convert to fraction form
   103,628.72/155,445.24 = 33,515.12/x
3. Step 3: Cross multiply
   103,628.72x = 155,445.24 × 33,515.12
4. Step 4: Simplify right side
   103,628.72x = 5,209,765,872.03
5. Step 5: Solve for x
   x = 5,209,765,872.03/103,628.72
6. Step 6: Final answer
   x = 50,273.38