Finding the Fourth Proportional to 82,979.10, 124,446.33 and 30,388.86

Step by Step Solution

1. Step 1: Write the proportion equation
   82,979.10 : 124,446.33 = 30,388.86 : x
2. Step 2: Convert to fraction form
   82,979.10/124,446.33 = 30,388.86/x
3. Step 3: Cross multiply
   82,979.10x = 124,446.33 × 30,388.86
4. Step 4: Simplify right side
   82,979.10x = 3,781,782,099.88
5. Step 5: Solve for x
   x = 3,781,782,099.88/82,979.10
6. Step 6: Final answer
   x = 45,575.12