Finding the Fourth Proportional to 73,680, 101,678.42 and 40,146

Step by Step Solution

1. Step 1: Write the proportion equation
   73,680 : 101,678.42 = 40,146 : x
2. Step 2: Convert to fraction form
   73,680/101,678.42 = 40,146/x
3. Step 3: Cross multiply
   73,680x = 101,678.42 × 40,146
4. Step 4: Simplify right side
   73,680x = 4,081,981,648.59
5. Step 5: Solve for x
   x = 4,081,981,648.59/73,680
6. Step 6: Final answer
   x = 55,401.49