Finding the Fourth Proportional to 82,182.21, 113,425.34 and 47,721.57

Step by Step Solution

1. Step 1: Write the proportion equation
   82,182.21 : 113,425.34 = 47,721.57 : x
2. Step 2: Convert to fraction form
   82,182.21/113,425.34 = 47,721.57/x
3. Step 3: Cross multiply
   82,182.21x = 113,425.34 × 47,721.57
4. Step 4: Simplify right side
   82,182.21x = 5,412,835,063.98
5. Step 5: Solve for x
   x = 5,412,835,063.98/82,182.21
6. Step 6: Final answer
   x = 65,863.83