Finding the Fourth Proportional to 81,180.41, 112,077.41 and 50,991.57

Step by Step Solution

1. Step 1: Write the proportion equation
   81,180.41 : 112,077.41 = 50,991.57 : x
2. Step 2: Convert to fraction form
   81,180.41/112,077.41 = 50,991.57/x
3. Step 3: Cross multiply
   81,180.41x = 112,077.41 × 50,991.57
4. Step 4: Simplify right side
   81,180.41x = 5,715,002,842.48
5. Step 5: Solve for x
   x = 5,715,002,842.48/81,180.41
6. Step 6: Final answer
   x = 70,398.80