Finding the Fourth Proportional to 139,103.94, 191,961.54 and 75,440.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,103.94 : 191,961.54 = 75,440.46 : x
2. Step 2: Convert to fraction form
   139,103.94/191,961.54 = 75,440.46/x
3. Step 3: Cross multiply
   139,103.94x = 191,961.54 × 75,440.46
4. Step 4: Simplify right side
   139,103.94x = 14,481,666,879.91
5. Step 5: Solve for x
   x = 14,481,666,879.91/139,103.94
6. Step 6: Final answer
   x = 104,106.81