Finding the Fourth Proportional to 404,709.39, 607,065.92 and 105,168.76

Step by Step Solution

1. Step 1: Write the proportion equation
   404,709.39 : 607,065.92 = 105,168.76 : x
2. Step 2: Convert to fraction form
   404,709.39/607,065.92 = 105,168.76/x
3. Step 3: Cross multiply
   404,709.39x = 607,065.92 × 105,168.76
4. Step 4: Simplify right side
   404,709.39x = 63,844,368,789.92
5. Step 5: Solve for x
   x = 63,844,368,789.92/404,709.39
6. Step 6: Final answer
   x = 157,753.61