Finding the Fourth Proportional to 105,960.94, 158,906.31 and 42,764.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,960.94 : 158,906.31 = 42,764.74 : x
2. Step 2: Convert to fraction form
   105,960.94/158,906.31 = 42,764.74/x
3. Step 3: Cross multiply
   105,960.94x = 158,906.31 × 42,764.74
4. Step 4: Simplify right side
   105,960.94x = 6,795,587,031.51
5. Step 5: Solve for x
   x = 6,795,587,031.51/105,960.94
6. Step 6: Final answer
   x = 64,132.94