Finding the Fourth Proportional to 139,467.30, 192,456.72 and 75,804.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,467.30 : 192,456.72 = 75,804.54 : x
2. Step 2: Convert to fraction form
   139,467.30/192,456.72 = 75,804.54/x
3. Step 3: Cross multiply
   139,467.30x = 192,456.72 × 75,804.54
4. Step 4: Simplify right side
   139,467.30x = 14,589,093,129.51
5. Step 5: Solve for x
   x = 14,589,093,129.51/139,467.30
6. Step 6: Final answer
   x = 104,605.83