Finding the Fourth Proportional to 105,888.67, 146,071.25 and 85,768.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,888.67 : 146,071.25 = 85,768.27 : x
2. Step 2: Convert to fraction form
   105,888.67/146,071.25 = 85,768.27/x
3. Step 3: Cross multiply
   105,888.67x = 146,071.25 × 85,768.27
4. Step 4: Simplify right side
   105,888.67x = 12,528,277,936.85
5. Step 5: Solve for x
   x = 12,528,277,936.85/105,888.67
6. Step 6: Final answer
   x = 118,315.57