Finding the Fourth Proportional to 139,760.24, 192,870.32 and 79,331.00

Step by Step Solution

1. Step 1: Write the proportion equation
   139,760.24 : 192,870.32 = 79,331.00 : x
2. Step 2: Convert to fraction form
   139,760.24/192,870.32 = 79,331.00/x
3. Step 3: Cross multiply
   139,760.24x = 192,870.32 × 79,331.00
4. Step 4: Simplify right side
   139,760.24x = 15,300,593,994.91
5. Step 5: Solve for x
   x = 15,300,593,994.91/139,760.24
6. Step 6: Final answer
   x = 109,477.45