Finding the Fourth Proportional to 139,703.78, 192,785.86 and 79,270.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,703.78 : 192,785.86 = 79,270.82 : x
2. Step 2: Convert to fraction form
   139,703.78/192,785.86 = 79,270.82/x
3. Step 3: Cross multiply
   139,703.78x = 192,785.86 × 79,270.82
4. Step 4: Simplify right side
   139,703.78x = 15,282,292,044.50
5. Step 5: Solve for x
   x = 15,282,292,044.50/139,703.78
6. Step 6: Final answer
   x = 109,390.68