Finding the Fourth Proportional to 82,676.64, 123,971.76 and 43,137.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82,676.64 : 123,971.76 = 43,137.12 : x
2. Step 2: Convert to fraction form
   82,676.64/123,971.76 = 43,137.12/x
3. Step 3: Cross multiply
   82,676.64x = 123,971.76 × 43,137.12
4. Step 4: Simplify right side
   82,676.64x = 5,347,784,687.73
5. Step 5: Solve for x
   x = 5,347,784,687.73/82,676.64
6. Step 6: Final answer
   x = 64,683.14