Finding the Fourth Proportional to 105,667.68, 145,823.04 and 63,228

Step by Step Solution

1. Step 1: Write the proportion equation
   105,667.68 : 145,823.04 = 63,228 : x
2. Step 2: Convert to fraction form
   105,667.68/145,823.04 = 63,228/x
3. Step 3: Cross multiply
   105,667.68x = 145,823.04 × 63,228
4. Step 4: Simplify right side
   105,667.68x = 9,220,099,173.12
5. Step 5: Solve for x
   x = 9,220,099,173.12/105,667.68
6. Step 6: Final answer
   x = 87,255.62