Finding the Fourth Proportional to 228,980.58, 315,786.35 and 142,947.51

Step by Step Solution

1. Step 1: Write the proportion equation
   228,980.58 : 315,786.35 = 142,947.51 : x
2. Step 2: Convert to fraction form
   228,980.58/315,786.35 = 142,947.51/x
3. Step 3: Cross multiply
   228,980.58x = 315,786.35 × 142,947.51
4. Step 4: Simplify right side
   228,980.58x = 45,140,870,845.56
5. Step 5: Solve for x
   x = 45,140,870,845.56/228,980.58
6. Step 6: Final answer
   x = 197,138.42