Finding the Fourth Proportional to 57,013.47, 85,483.98 and 50,007.55

Step by Step Solution

1. Step 1: Write the proportion equation
   57,013.47 : 85,483.98 = 50,007.55 : x
2. Step 2: Convert to fraction form
   57,013.47/85,483.98 = 50,007.55/x
3. Step 3: Cross multiply
   57,013.47x = 85,483.98 × 50,007.55
4. Step 4: Simplify right side
   57,013.47x = 4,274,844,404.05
5. Step 5: Solve for x
   x = 4,274,844,404.05/57,013.47
6. Step 6: Final answer
   x = 74,979.55