Finding the Fourth Proportional to 82,781.67, 123,485.22 and 80,014.20

Step by Step Solution

1. Step 1: Write the proportion equation
   82,781.67 : 123,485.22 = 80,014.20 : x
2. Step 2: Convert to fraction form
   82,781.67/123,485.22 = 80,014.20/x
3. Step 3: Cross multiply
   82,781.67x = 123,485.22 × 80,014.20
4. Step 4: Simplify right side
   82,781.67x = 9,880,571,090.12
5. Step 5: Solve for x
   x = 9,880,571,090.12/82,781.67
6. Step 6: Final answer
   x = 119,356.99