Finding the Fourth Proportional to 139,567.50, 192,603.15 and 79,118.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,567.50 : 192,603.15 = 79,118.82 : x
2. Step 2: Convert to fraction form
   139,567.50/192,603.15 = 79,118.82/x
3. Step 3: Cross multiply
   139,567.50x = 192,603.15 × 79,118.82
4. Step 4: Simplify right side
   139,567.50x = 15,238,533,956.28
5. Step 5: Solve for x
   x = 15,238,533,956.28/139,567.50
6. Step 6: Final answer
   x = 109,183.97