Finding the Fourth Proportional to 404,152.38, 606,111.45 and 137,906.94

Step by Step Solution

1. Step 1: Write the proportion equation
   404,152.38 : 606,111.45 = 137,906.94 : x
2. Step 2: Convert to fraction form
   404,152.38/606,111.45 = 137,906.94/x
3. Step 3: Cross multiply
   404,152.38x = 606,111.45 × 137,906.94
4. Step 4: Simplify right side
   404,152.38x = 83,586,975,368.46
5. Step 5: Solve for x
   x = 83,586,975,368.46/404,152.38
6. Step 6: Final answer
   x = 206,820.45