Finding the Fourth Proportional to 139,749.00, 192,843.89 and 79,320.87

Step by Step Solution

1. Step 1: Write the proportion equation
   139,749.00 : 192,843.89 = 79,320.87 : x
2. Step 2: Convert to fraction form
   139,749.00/192,843.89 = 79,320.87/x
3. Step 3: Cross multiply
   139,749.00x = 192,843.89 × 79,320.87
4. Step 4: Simplify right side
   139,749.00x = 15,296,544,732.38
5. Step 5: Solve for x
   x = 15,296,544,732.38/139,749.00
6. Step 6: Final answer
   x = 109,457.28