Finding the Fourth Proportional to 82,911,618.72, 124,383,368.76 and 31,789,650.48

Step by Step Solution

1. Step 1: Write the proportion equation
   82,911,618.72 : 124,383,368.76 = 31,789,650.48 : x
2. Step 2: Convert to fraction form
   82,911,618.72/124,383,368.76 = 31,789,650.48/x
3. Step 3: Cross multiply
   82,911,618.72x = 124,383,368.76 × 31,789,650.48
4. Step 4: Simplify right side
   82,911,618.72x = 3,954,103,818,405,351
5. Step 5: Solve for x
   x = 3,954,103,818,405,351/82,911,618.72
6. Step 6: Final answer
   x = 47,690,587.63