Finding the Fourth Proportional to 82,771, 123,861.12 and 71,715.58

Step by Step Solution

1. Step 1: Write the proportion equation
   82,771 : 123,861.12 = 71,715.58 : x
2. Step 2: Convert to fraction form
   82,771/123,861.12 = 71,715.58/x
3. Step 3: Cross multiply
   82,771x = 123,861.12 × 71,715.58
4. Step 4: Simplify right side
   82,771x = 8,882,772,060.25
5. Step 5: Solve for x
   x = 8,882,772,060.25/82,771
6. Step 6: Final answer
   x = 107,317.44