Finding the Fourth Proportional to 82,730.92, 124,071.71 and 30,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,730.92 : 124,071.71 = 30,128.10 : x
2. Step 2: Convert to fraction form
   82,730.92/124,071.71 = 30,128.10/x
3. Step 3: Cross multiply
   82,730.92x = 124,071.71 × 30,128.10
4. Step 4: Simplify right side
   82,730.92x = 3,738,044,886.05
5. Step 5: Solve for x
   x = 3,738,044,886.05/82,730.92
6. Step 6: Final answer
   x = 45,183.17