Finding the Fourth Proportional to 82,890.76, 124,311.42 and 30,288.04

Step by Step Solution

1. Step 1: Write the proportion equation
   82,890.76 : 124,311.42 = 30,288.04 : x
2. Step 2: Convert to fraction form
   82,890.76/124,311.42 = 30,288.04/x
3. Step 3: Cross multiply
   82,890.76x = 124,311.42 × 30,288.04
4. Step 4: Simplify right side
   82,890.76x = 3,765,149,261.42
5. Step 5: Solve for x
   x = 3,765,149,261.42/82,890.76
6. Step 6: Final answer
   x = 45,423.03