Finding the Fourth Proportional to 139,669.27, 192,764.35 and 82,290.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,669.27 : 192,764.35 = 82,290.25 : x
2. Step 2: Convert to fraction form
   139,669.27/192,764.35 = 82,290.25/x
3. Step 3: Cross multiply
   139,669.27x = 192,764.35 × 82,290.25
4. Step 4: Simplify right side
   139,669.27x = 15,862,626,141.14
5. Step 5: Solve for x
   x = 15,862,626,141.14/139,669.27
6. Step 6: Final answer
   x = 113,572.77