Finding the Fourth Proportional to 159,663.61, 239,425.89 and 45,786.31

Step by Step Solution

1. Step 1: Write the proportion equation
   159,663.61 : 239,425.89 = 45,786.31 : x
2. Step 2: Convert to fraction form
   159,663.61/239,425.89 = 45,786.31/x
3. Step 3: Cross multiply
   159,663.61x = 239,425.89 × 45,786.31
4. Step 4: Simplify right side
   159,663.61x = 10,962,428,021.57
5. Step 5: Solve for x
   x = 10,962,428,021.57/159,663.61
6. Step 6: Final answer
   x = 68,659.53