Finding the Fourth Proportional to 83,081.76, 123,986.80 and 74,217.12

Step by Step Solution

1. Step 1: Write the proportion equation
   83,081.76 : 123,986.80 = 74,217.12 : x
2. Step 2: Convert to fraction form
   83,081.76/123,986.80 = 74,217.12/x
3. Step 3: Cross multiply
   83,081.76x = 123,986.80 × 74,217.12
4. Step 4: Simplify right side
   83,081.76x = 9,201,943,214.02
5. Step 5: Solve for x
   x = 9,201,943,214.02/83,081.76
6. Step 6: Final answer
   x = 110,757.68