Finding the Fourth Proportional to 103,698.72, 155,572.72 and 33,578

Step by Step Solution

1. Step 1: Write the proportion equation
   103,698.72 : 155,572.72 = 33,578 : x
2. Step 2: Convert to fraction form
   103,698.72/155,572.72 = 33,578/x
3. Step 3: Cross multiply
   103,698.72x = 155,572.72 × 33,578
4. Step 4: Simplify right side
   103,698.72x = 5,223,820,792.16
5. Step 5: Solve for x
   x = 5,223,820,792.16/103,698.72
6. Step 6: Final answer
   x = 50,374.98