Finding the Fourth Proportional to 103,690.72, 155,560.72 and 33,570

Step by Step Solution

1. Step 1: Write the proportion equation
   103,690.72 : 155,560.72 = 33,570 : x
2. Step 2: Convert to fraction form
   103,690.72/155,560.72 = 33,570/x
3. Step 3: Cross multiply
   103,690.72x = 155,560.72 × 33,570
4. Step 4: Simplify right side
   103,690.72x = 5,222,173,370.40
5. Step 5: Solve for x
   x = 5,222,173,370.40/103,690.72
6. Step 6: Final answer
   x = 50,362.98