Finding the Fourth Proportional to 48,105.98, 72,171.12 and 20,017.61

Step by Step Solution

1. Step 1: Write the proportion equation
   48,105.98 : 72,171.12 = 20,017.61 : x
2. Step 2: Convert to fraction form
   48,105.98/72,171.12 = 20,017.61/x
3. Step 3: Cross multiply
   48,105.98x = 72,171.12 × 20,017.61
4. Step 4: Simplify right side
   48,105.98x = 1,444,693,333.42
5. Step 5: Solve for x
   x = 1,444,693,333.42/48,105.98
6. Step 6: Final answer
   x = 30,031.47