Finding the Fourth Proportional to 139,947.14, 193,119.76 and 79,509.39

Step by Step Solution

1. Step 1: Write the proportion equation
   139,947.14 : 193,119.76 = 79,509.39 : x
2. Step 2: Convert to fraction form
   139,947.14/193,119.76 = 79,509.39/x
3. Step 3: Cross multiply
   139,947.14x = 193,119.76 × 79,509.39
4. Step 4: Simplify right side
   139,947.14x = 15,354,834,314.55
5. Step 5: Solve for x
   x = 15,354,834,314.55/139,947.14
6. Step 6: Final answer
   x = 109,718.81