Finding the Fourth Proportional to 82,971, 114,508.62 and 51,139.08

Step by Step Solution

1. Step 1: Write the proportion equation
   82,971 : 114,508.62 = 51,139.08 : x
2. Step 2: Convert to fraction form
   82,971/114,508.62 = 51,139.08/x
3. Step 3: Cross multiply
   82,971x = 114,508.62 × 51,139.08
4. Step 4: Simplify right side
   82,971x = 5,855,865,478.87
5. Step 5: Solve for x
   x = 5,855,865,478.87/82,971
6. Step 6: Final answer
   x = 70,577.26