Finding the Fourth Proportional to 105,052.52, 157,644.38 and 42,723

Step by Step Solution

1. Step 1: Write the proportion equation
   105,052.52 : 157,644.38 = 42,723 : x
2. Step 2: Convert to fraction form
   105,052.52/157,644.38 = 42,723/x
3. Step 3: Cross multiply
   105,052.52x = 157,644.38 × 42,723
4. Step 4: Simplify right side
   105,052.52x = 6,735,040,846.74
5. Step 5: Solve for x
   x = 6,735,040,846.74/105,052.52
6. Step 6: Final answer
   x = 64,111.18