Finding the Fourth Proportional to 103,978.56, 155,951.52 and 33,857.28

Step by Step Solution

1. Step 1: Write the proportion equation
   103,978.56 : 155,951.52 = 33,857.28 : x
2. Step 2: Convert to fraction form
   103,978.56/155,951.52 = 33,857.28/x
3. Step 3: Cross multiply
   103,978.56x = 155,951.52 × 33,857.28
4. Step 4: Simplify right side
   103,978.56x = 5,280,094,279.07
5. Step 5: Solve for x
   x = 5,280,094,279.07/103,978.56
6. Step 6: Final answer
   x = 50,780.61