Finding the Fourth Proportional to 48,108.42, 72,162.72 and 18,540.18

Step by Step Solution

1. Step 1: Write the proportion equation
   48,108.42 : 72,162.72 = 18,540.18 : x
2. Step 2: Convert to fraction form
   48,108.42/72,162.72 = 18,540.18/x
3. Step 3: Cross multiply
   48,108.42x = 72,162.72 × 18,540.18
4. Step 4: Simplify right side
   48,108.42x = 1,337,909,818.09
5. Step 5: Solve for x
   x = 1,337,909,818.09/48,108.42
6. Step 6: Final answer
   x = 27,810.30