Finding the Fourth Proportional to 105,938.90, 146,134.61 and 63,472.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,938.90 : 146,134.61 = 63,472.83 : x
2. Step 2: Convert to fraction form
   105,938.90/146,134.61 = 63,472.83/x
3. Step 3: Cross multiply
   105,938.90x = 146,134.61 × 63,472.83
4. Step 4: Simplify right side
   105,938.90x = 9,275,577,257.65
5. Step 5: Solve for x
   x = 9,275,577,257.65/105,938.90
6. Step 6: Final answer
   x = 87,555.91