Finding the Fourth Proportional to 139,747.55, 192,845.81 and 76,085.39

Step by Step Solution

1. Step 1: Write the proportion equation
   139,747.55 : 192,845.81 = 76,085.39 : x
2. Step 2: Convert to fraction form
   139,747.55/192,845.81 = 76,085.39/x
3. Step 3: Cross multiply
   139,747.55x = 192,845.81 × 76,085.39
4. Step 4: Simplify right side
   139,747.55x = 14,672,749,336.04
5. Step 5: Solve for x
   x = 14,672,749,336.04/139,747.55
6. Step 6: Final answer
   x = 104,994.68