Finding the Fourth Proportional to 150,123.28, 225,273.85 and 55,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,123.28 : 225,273.85 = 55,419.50 : x
2. Step 2: Convert to fraction form
   150,123.28/225,273.85 = 55,419.50/x
3. Step 3: Cross multiply
   150,123.28x = 225,273.85 × 55,419.50
4. Step 4: Simplify right side
   150,123.28x = 12,484,562,865.16
5. Step 5: Solve for x
   x = 12,484,562,865.16/150,123.28
6. Step 6: Final answer
   x = 83,162.07