Finding the Fourth Proportional to 329,660.69, 494,463.69 and 105,012.05

Step by Step Solution

1. Step 1: Write the proportion equation
   329,660.69 : 494,463.69 = 105,012.05 : x
2. Step 2: Convert to fraction form
   329,660.69/494,463.69 = 105,012.05/x
3. Step 3: Cross multiply
   329,660.69x = 494,463.69 × 105,012.05
4. Step 4: Simplify right side
   329,660.69x = 51,924,643,265.15
5. Step 5: Solve for x
   x = 51,924,643,265.15/329,660.69
6. Step 6: Final answer
   x = 157,509.36