Finding the Fourth Proportional to 139,510.82, 192,591.06 and 89,238.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,510.82 : 192,591.06 = 89,238.98 : x
2. Step 2: Convert to fraction form
   139,510.82/192,591.06 = 89,238.98/x
3. Step 3: Cross multiply
   139,510.82x = 192,591.06 × 89,238.98
4. Step 4: Simplify right side
   139,510.82x = 17,186,629,751.52
5. Step 5: Solve for x
   x = 17,186,629,751.52/139,510.82
6. Step 6: Final answer
   x = 123,192.09