Finding the Fourth Proportional to 108,134.14, 162,235.89 and 51,978.31

Step by Step Solution

1. Step 1: Write the proportion equation
   108,134.14 : 162,235.89 = 51,978.31 : x
2. Step 2: Convert to fraction form
   108,134.14/162,235.89 = 51,978.31/x
3. Step 3: Cross multiply
   108,134.14x = 162,235.89 × 51,978.31
4. Step 4: Simplify right side
   108,134.14x = 8,432,747,383.55
5. Step 5: Solve for x
   x = 8,432,747,383.55/108,134.14
6. Step 6: Final answer
   x = 77,984.14