Finding the Fourth Proportional to 139,160.96, 208,570.36 and 64,177

Step by Step Solution

1. Step 1: Write the proportion equation
   139,160.96 : 208,570.36 = 64,177 : x
2. Step 2: Convert to fraction form
   139,160.96/208,570.36 = 64,177/x
3. Step 3: Cross multiply
   139,160.96x = 208,570.36 × 64,177
4. Step 4: Simplify right side
   139,160.96x = 13,385,419,993.72
5. Step 5: Solve for x
   x = 13,385,419,993.72/139,160.96
6. Step 6: Final answer
   x = 96,186.60