Finding the Fourth Proportional to 82,820.10, 124,230.15 and 30,250.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,820.10 : 124,230.15 = 30,250.10 : x
2. Step 2: Convert to fraction form
   82,820.10/124,230.15 = 30,250.10/x
3. Step 3: Cross multiply
   82,820.10x = 124,230.15 × 30,250.10
4. Step 4: Simplify right side
   82,820.10x = 3,757,973,839.36
5. Step 5: Solve for x
   x = 3,757,973,839.36/82,820.10
6. Step 6: Final answer
   x = 45,375.14