Finding the Fourth Proportional to 81,976.10, 113,131.23 and 50,135

Step by Step Solution

1. Step 1: Write the proportion equation
   81,976.10 : 113,131.23 = 50,135 : x
2. Step 2: Convert to fraction form
   81,976.10/113,131.23 = 50,135/x
3. Step 3: Cross multiply
   81,976.10x = 113,131.23 × 50,135
4. Step 4: Simplify right side
   81,976.10x = 5,671,834,216.05
5. Step 5: Solve for x
   x = 5,671,834,216.05/81,976.10
6. Step 6: Final answer
   x = 69,188.88