Finding the Fourth Proportional to 139,814.81, 192,949.25 and 79,383.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,814.81 : 192,949.25 = 79,383.45 : x
2. Step 2: Convert to fraction form
   139,814.81/192,949.25 = 79,383.45/x
3. Step 3: Cross multiply
   139,814.81x = 192,949.25 × 79,383.45
4. Step 4: Simplify right side
   139,814.81x = 15,316,976,743.00
5. Step 5: Solve for x
   x = 15,316,976,743.00/139,814.81
6. Step 6: Final answer
   x = 109,551.89