Finding the Fourth Proportional to 105,942.40, 146,139.42 and 63,476.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,942.40 : 146,139.42 = 63,476.33 : x
2. Step 2: Convert to fraction form
   105,942.40/146,139.42 = 63,476.33/x
3. Step 3: Cross multiply
   105,942.40x = 146,139.42 × 63,476.33
4. Step 4: Simplify right side
   105,942.40x = 9,276,393,557.27
5. Step 5: Solve for x
   x = 9,276,393,557.27/105,942.40
6. Step 6: Final answer
   x = 87,560.73