Finding the Fourth Proportional to 315,945,653.31, 473,939,274.69 and 82,782,074.61

Step by Step Solution

1. Step 1: Write the proportion equation
   315,945,653.31 : 473,939,274.69 = 82,782,074.61 : x
2. Step 2: Convert to fraction form
   315,945,653.31/473,939,274.69 = 82,782,074.61/x
3. Step 3: Cross multiply
   315,945,653.31x = 473,939,274.69 × 82,782,074.61
4. Step 4: Simplify right side
   315,945,653.31x = 39,233,676,397,996,864
5. Step 5: Solve for x
   x = 39,233,676,397,996,864/315,945,653.31
6. Step 6: Final answer
   x = 124,178,560.42