Finding the Fourth Proportional to 83,215.85, 124,811.47 and 30,613.03

Step by Step Solution

1. Step 1: Write the proportion equation
   83,215.85 : 124,811.47 = 30,613.03 : x
2. Step 2: Convert to fraction form
   83,215.85/124,811.47 = 30,613.03/x
3. Step 3: Cross multiply
   83,215.85x = 124,811.47 × 30,613.03
4. Step 4: Simplify right side
   83,215.85x = 3,820,857,275.45
5. Step 5: Solve for x
   x = 3,820,857,275.45/83,215.85
6. Step 6: Final answer
   x = 45,915.02