Finding the Fourth Proportional to 82,046,139.71, 113,258,535.33 and 51,121,587.92

Step by Step Solution

1. Step 1: Write the proportion equation
   82,046,139.71 : 113,258,535.33 = 51,121,587.92 : x
2. Step 2: Convert to fraction form
   82,046,139.71/113,258,535.33 = 51,121,587.92/x
3. Step 3: Cross multiply
   82,046,139.71x = 113,258,535.33 × 51,121,587.92
4. Step 4: Simplify right side
   82,046,139.71x = 5,789,956,170,996,728
5. Step 5: Solve for x
   x = 5,789,956,170,996,728/82,046,139.71
6. Step 6: Final answer
   x = 70,569,513.59