Finding the Fourth Proportional to 139,666.55, 192,738.60 and 76,004.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,666.55 : 192,738.60 = 76,004.42 : x
2. Step 2: Convert to fraction form
   139,666.55/192,738.60 = 76,004.42/x
3. Step 3: Cross multiply
   139,666.55x = 192,738.60 × 76,004.42
4. Step 4: Simplify right side
   139,666.55x = 14,648,984,540.92
5. Step 5: Solve for x
   x = 14,648,984,540.92/139,666.55
6. Step 6: Final answer
   x = 104,885.42