Finding the Fourth Proportional to 105,869.10, 146,071.98 and 63,397.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,869.10 : 146,071.98 = 63,397.56 : x
2. Step 2: Convert to fraction form
   105,869.10/146,071.98 = 63,397.56/x
3. Step 3: Cross multiply
   105,869.10x = 146,071.98 × 63,397.56
4. Step 4: Simplify right side
   105,869.10x = 9,260,607,116.37
5. Step 5: Solve for x
   x = 9,260,607,116.37/105,869.10
6. Step 6: Final answer
   x = 87,472.24