Finding the Fourth Proportional to 105,879.72, 146,118.78 and 63,437.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,879.72 : 146,118.78 = 63,437.34 : x
2. Step 2: Convert to fraction form
   105,879.72/146,118.78 = 63,437.34/x
3. Step 3: Cross multiply
   105,879.72x = 146,118.78 × 63,437.34
4. Step 4: Simplify right side
   105,879.72x = 9,269,386,727.25
5. Step 5: Solve for x
   x = 9,269,386,727.25/105,879.72
6. Step 6: Final answer
   x = 87,546.38