Finding the Fourth Proportional to 253,315.15, 380,077.35 and 111,086.80

Step by Step Solution

1. Step 1: Write the proportion equation
   253,315.15 : 380,077.35 = 111,086.80 : x
2. Step 2: Convert to fraction form
   253,315.15/380,077.35 = 111,086.80/x
3. Step 3: Cross multiply
   253,315.15x = 380,077.35 × 111,086.80
4. Step 4: Simplify right side
   253,315.15x = 42,221,576,563.98
5. Step 5: Solve for x
   x = 42,221,576,563.98/253,315.15
6. Step 6: Final answer
   x = 166,676.08