Finding the Fourth Proportional to 72,443.30, 108,519.15 and 48,823.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,443.30 : 108,519.15 = 48,823.70 : x
2. Step 2: Convert to fraction form
   72,443.30/108,519.15 = 48,823.70/x
3. Step 3: Cross multiply
   72,443.30x = 108,519.15 × 48,823.70
4. Step 4: Simplify right side
   72,443.30x = 5,298,306,423.86
5. Step 5: Solve for x
   x = 5,298,306,423.86/72,443.30
6. Step 6: Final answer
   x = 73,137.29