Finding the Fourth Proportional to 139,166.96, 208,721.73 and 68,016.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,166.96 : 208,721.73 = 68,016.56 : x
2. Step 2: Convert to fraction form
   139,166.96/208,721.73 = 68,016.56/x
3. Step 3: Cross multiply
   139,166.96x = 208,721.73 × 68,016.56
4. Step 4: Simplify right side
   139,166.96x = 14,196,534,071.85
5. Step 5: Solve for x
   x = 14,196,534,071.85/139,166.96
6. Step 6: Final answer
   x = 102,010.81