Finding the Fourth Proportional to 105,870.10, 146,073.36 and 63,398.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,870.10 : 146,073.36 = 63,398.56 : x
2. Step 2: Convert to fraction form
   105,870.10/146,073.36 = 63,398.56/x
3. Step 3: Cross multiply
   105,870.10x = 146,073.36 × 63,398.56
4. Step 4: Simplify right side
   105,870.10x = 9,260,840,678.36
5. Step 5: Solve for x
   x = 9,260,840,678.36/105,870.10
6. Step 6: Final answer
   x = 87,473.62