Finding the Fourth Proportional to 105,878.72, 146,117.40 and 63,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,878.72 : 146,117.40 = 63,436.34 : x
2. Step 2: Convert to fraction form
   105,878.72/146,117.40 = 63,436.34/x
3. Step 3: Cross multiply
   105,878.72x = 146,117.40 × 63,436.34
4. Step 4: Simplify right side
   105,878.72x = 9,269,153,066.32
5. Step 5: Solve for x
   x = 9,269,153,066.32/105,878.72
6. Step 6: Final answer
   x = 87,545.00