Finding the Fourth Proportional to 139,921.73, 193,096.50 and 79,491.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,921.73 : 193,096.50 = 79,491.27 : x
2. Step 2: Convert to fraction form
   139,921.73/193,096.50 = 79,491.27/x
3. Step 3: Cross multiply
   139,921.73x = 193,096.50 × 79,491.27
4. Step 4: Simplify right side
   139,921.73x = 15,349,486,017.56
5. Step 5: Solve for x
   x = 15,349,486,017.56/139,921.73
6. Step 6: Final answer
   x = 109,700.52