Finding the Fourth Proportional to 105,805.14, 146,016.54 and 63,388.26

Step by Step Solution

1. Step 1: Write the proportion equation
   105,805.14 : 146,016.54 = 63,388.26 : x
2. Step 2: Convert to fraction form
   105,805.14/146,016.54 = 63,388.26/x
3. Step 3: Cross multiply
   105,805.14x = 146,016.54 × 63,388.26
4. Step 4: Simplify right side
   105,805.14x = 9,255,734,401.82
5. Step 5: Solve for x
   x = 9,255,734,401.82/105,805.14
6. Step 6: Final answer
   x = 87,479.06