Finding the Fourth Proportional to 81,974.10, 113,128.47 and 50,133

Step by Step Solution

1. Step 1: Write the proportion equation
   81,974.10 : 113,128.47 = 50,133 : x
2. Step 2: Convert to fraction form
   81,974.10/113,128.47 = 50,133/x
3. Step 3: Cross multiply
   81,974.10x = 113,128.47 × 50,133
4. Step 4: Simplify right side
   81,974.10x = 5,671,469,586.51
5. Step 5: Solve for x
   x = 5,671,469,586.51/81,974.10
6. Step 6: Final answer
   x = 69,186.12