Finding the Fourth Proportional to 83,315.37, 124,910.58 and 27,121.89

Step by Step Solution

1. Step 1: Write the proportion equation
   83,315.37 : 124,910.58 = 27,121.89 : x
2. Step 2: Convert to fraction form
   83,315.37/124,910.58 = 27,121.89/x
3. Step 3: Cross multiply
   83,315.37x = 124,910.58 × 27,121.89
4. Step 4: Simplify right side
   83,315.37x = 3,387,811,010.60
5. Step 5: Solve for x
   x = 3,387,811,010.60/83,315.37
6. Step 6: Final answer
   x = 40,662.50