Finding the Fourth Proportional to 87,111.20, 130,635.43 and 30,169.68

Step by Step Solution

1. Step 1: Write the proportion equation
   87,111.20 : 130,635.43 = 30,169.68 : x
2. Step 2: Convert to fraction form
   87,111.20/130,635.43 = 30,169.68/x
3. Step 3: Cross multiply
   87,111.20x = 130,635.43 × 30,169.68
4. Step 4: Simplify right side
   87,111.20x = 3,941,229,044.34
5. Step 5: Solve for x
   x = 3,941,229,044.34/87,111.20
6. Step 6: Final answer
   x = 45,243.66