Finding the Fourth Proportional to 162,386.20, 243,616.20 and 73,665.10

Step by Step Solution

1. Step 1: Write the proportion equation
   162,386.20 : 243,616.20 = 73,665.10 : x
2. Step 2: Convert to fraction form
   162,386.20/243,616.20 = 73,665.10/x
3. Step 3: Cross multiply
   162,386.20x = 243,616.20 × 73,665.10
4. Step 4: Simplify right side
   162,386.20x = 17,946,011,734.62
5. Step 5: Solve for x
   x = 17,946,011,734.62/162,386.20
6. Step 6: Final answer
   x = 110,514.39