Finding the Fourth Proportional to 81,921.02, 113,059.53 and 50,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,921.02 : 113,059.53 = 50,111.10 : x
2. Step 2: Convert to fraction form
   81,921.02/113,059.53 = 50,111.10/x
3. Step 3: Cross multiply
   81,921.02x = 113,059.53 × 50,111.10
4. Step 4: Simplify right side
   81,921.02x = 5,665,537,413.78
5. Step 5: Solve for x
   x = 5,665,537,413.78/81,921.02
6. Step 6: Final answer
   x = 69,158.54