Finding the Fourth Proportional to 57,012.94, 85,483.18 and 50,007.02

Step by Step Solution

1. Step 1: Write the proportion equation
   57,012.94 : 85,483.18 = 50,007.02 : x
2. Step 2: Convert to fraction form
   57,012.94/85,483.18 = 50,007.02/x
3. Step 3: Cross multiply
   57,012.94x = 85,483.18 × 50,007.02
4. Step 4: Simplify right side
   57,012.94x = 4,274,759,091.92
5. Step 5: Solve for x
   x = 4,274,759,091.92/57,012.94
6. Step 6: Final answer
   x = 74,978.75