Finding the Fourth Proportional to 139,830.57, 192,965.90 and 76,168.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,830.57 : 192,965.90 = 76,168.22 : x
2. Step 2: Convert to fraction form
   139,830.57/192,965.90 = 76,168.22/x
3. Step 3: Cross multiply
   139,830.57x = 192,965.90 × 76,168.22
4. Step 4: Simplify right side
   139,830.57x = 14,697,867,778.03
5. Step 5: Solve for x
   x = 14,697,867,778.03/139,830.57
6. Step 6: Final answer
   x = 105,111.98