Finding the Fourth Proportional to 139,724.67, 192,846.62 and 79,300.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,724.67 : 192,846.62 = 79,300.98 : x
2. Step 2: Convert to fraction form
   139,724.67/192,846.62 = 79,300.98/x
3. Step 3: Cross multiply
   139,724.67x = 192,846.62 × 79,300.98
4. Step 4: Simplify right side
   139,724.67x = 15,292,925,559.18
5. Step 5: Solve for x
   x = 15,292,925,559.18/139,724.67
6. Step 6: Final answer
   x = 109,450.43