Finding the Fourth Proportional to 105,425.48, 158,157.42 and 50,021

Step by Step Solution

1. Step 1: Write the proportion equation
   105,425.48 : 158,157.42 = 50,021 : x
2. Step 2: Convert to fraction form
   105,425.48/158,157.42 = 50,021/x
3. Step 3: Cross multiply
   105,425.48x = 158,157.42 × 50,021
4. Step 4: Simplify right side
   105,425.48x = 7,911,192,305.82
5. Step 5: Solve for x
   x = 7,911,192,305.82/105,425.48
6. Step 6: Final answer
   x = 75,040.61