Finding the Fourth Proportional to 139,729.54, 192,826.71 and 76,067.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,729.54 : 192,826.71 = 76,067.32 : x
2. Step 2: Convert to fraction form
   139,729.54/192,826.71 = 76,067.32/x
3. Step 3: Cross multiply
   139,729.54x = 192,826.71 × 76,067.32
4. Step 4: Simplify right side
   139,729.54x = 14,667,810,572.05
5. Step 5: Solve for x
   x = 14,667,810,572.05/139,729.54
6. Step 6: Final answer
   x = 104,972.87