Finding the Fourth Proportional to 50,105.42, 75,157.86 and 12,665.48

Step by Step Solution

1. Step 1: Write the proportion equation
   50,105.42 : 75,157.86 = 12,665.48 : x
2. Step 2: Convert to fraction form
   50,105.42/75,157.86 = 12,665.48/x
3. Step 3: Cross multiply
   50,105.42x = 75,157.86 × 12,665.48
4. Step 4: Simplify right side
   50,105.42x = 951,910,372.67
5. Step 5: Solve for x
   x = 951,910,372.67/50,105.42
6. Step 6: Final answer
   x = 18,998.15