Finding the Fourth Proportional to 105,923.12, 146,112.88 and 63,457.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,923.12 : 146,112.88 = 63,457.05 : x
2. Step 2: Convert to fraction form
   105,923.12/146,112.88 = 63,457.05/x
3. Step 3: Cross multiply
   105,923.12x = 146,112.88 × 63,457.05
4. Step 4: Simplify right side
   105,923.12x = 9,271,892,331.80
5. Step 5: Solve for x
   x = 9,271,892,331.80/105,923.12
6. Step 6: Final answer
   x = 87,534.17