Finding the Fourth Proportional to 139,738.20, 192,838.72 and 76,075.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,738.20 : 192,838.72 = 76,075.96 : x
2. Step 2: Convert to fraction form
   139,738.20/192,838.72 = 76,075.96/x
3. Step 3: Cross multiply
   139,738.20x = 192,838.72 × 76,075.96
4. Step 4: Simplify right side
   139,738.20x = 14,670,390,749.17
5. Step 5: Solve for x
   x = 14,670,390,749.17/139,738.20
6. Step 6: Final answer
   x = 104,984.83