Finding the Fourth Proportional to 72,818.48, 100,520.54 and 48,959.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,818.48 : 100,520.54 = 48,959.06 : x
2. Step 2: Convert to fraction form
   72,818.48/100,520.54 = 48,959.06/x
3. Step 3: Cross multiply
   72,818.48x = 100,520.54 × 48,959.06
4. Step 4: Simplify right side
   72,818.48x = 4,921,390,401.69
5. Step 5: Solve for x
   x = 4,921,390,401.69/72,818.48
6. Step 6: Final answer
   x = 67,584.37