Finding the Fourth Proportional to 81,096,340.60, 111,823,290 and 51,681,103.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,096,340.60 : 111,823,290 = 51,681,103.12 : x
2. Step 2: Convert to fraction form
   81,096,340.60/111,823,290 = 51,681,103.12/x
3. Step 3: Cross multiply
   81,096,340.60x = 111,823,290 × 51,681,103.12
4. Step 4: Simplify right side
   81,096,340.60x = 5,779,150,981,707,665
5. Step 5: Solve for x
   x = 5,779,150,981,707,665/81,096,340.60
6. Step 6: Final answer
   x = 71,262,783.73