Finding the Fourth Proportional to 108,300.24, 162,481.50 and 54,990.12

Step by Step Solution

1. Step 1: Write the proportion equation
   108,300.24 : 162,481.50 = 54,990.12 : x
2. Step 2: Convert to fraction form
   108,300.24/162,481.50 = 54,990.12/x
3. Step 3: Cross multiply
   108,300.24x = 162,481.50 × 54,990.12
4. Step 4: Simplify right side
   108,300.24x = 8,934,877,182.78
5. Step 5: Solve for x
   x = 8,934,877,182.78/108,300.24
6. Step 6: Final answer
   x = 82,500.99