Finding the Fourth Proportional to 68,111.25, 102,170.72 and 20,727.89

Step by Step Solution

1. Step 1: Write the proportion equation
   68,111.25 : 102,170.72 = 20,727.89 : x
2. Step 2: Convert to fraction form
   68,111.25/102,170.72 = 20,727.89/x
3. Step 3: Cross multiply
   68,111.25x = 102,170.72 × 20,727.89
4. Step 4: Simplify right side
   68,111.25x = 2,117,783,189.95
5. Step 5: Solve for x
   x = 2,117,783,189.95/68,111.25
6. Step 6: Final answer
   x = 31,093.00