Finding the Fourth Proportional to 300,096.70, 450,145.05 and 160,128.70

Step by Step Solution

1. Step 1: Write the proportion equation
   300,096.70 : 450,145.05 = 160,128.70 : x
2. Step 2: Convert to fraction form
   300,096.70/450,145.05 = 160,128.70/x
3. Step 3: Cross multiply
   300,096.70x = 450,145.05 × 160,128.70
4. Step 4: Simplify right side
   300,096.70x = 72,081,141,667.94
5. Step 5: Solve for x
   x = 72,081,141,667.94/300,096.70
6. Step 6: Final answer
   x = 240,193.05