Finding the Fourth Proportional to 139,608.30, 192,659.28 and 75,945.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,608.30 : 192,659.28 = 75,945.94 : x
2. Step 2: Convert to fraction form
   139,608.30/192,659.28 = 75,945.94/x
3. Step 3: Cross multiply
   139,608.30x = 192,659.28 × 75,945.94
4. Step 4: Simplify right side
   139,608.30x = 14,631,690,119.32
5. Step 5: Solve for x
   x = 14,631,690,119.32/139,608.30
6. Step 6: Final answer
   x = 104,805.30