Finding the Fourth Proportional to 85,978.41, 118,650.14 and 50,161.49

Step by Step Solution

1. Step 1: Write the proportion equation
   85,978.41 : 118,650.14 = 50,161.49 : x
2. Step 2: Convert to fraction form
   85,978.41/118,650.14 = 50,161.49/x
3. Step 3: Cross multiply
   85,978.41x = 118,650.14 × 50,161.49
4. Step 4: Simplify right side
   85,978.41x = 5,951,666,967.05
5. Step 5: Solve for x
   x = 5,951,666,967.05/85,978.41
6. Step 6: Final answer
   x = 69,222.81