Finding the Fourth Proportional to 105,867.04, 146,164.88 and 65,623.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,867.04 : 146,164.88 = 65,623.60 : x
2. Step 2: Convert to fraction form
   105,867.04/146,164.88 = 65,623.60/x
3. Step 3: Cross multiply
   105,867.04x = 146,164.88 × 65,623.60
4. Step 4: Simplify right side
   105,867.04x = 9,591,865,619.17
5. Step 5: Solve for x
   x = 9,591,865,619.17/105,867.04
6. Step 6: Final answer
   x = 90,602.95