Finding the Fourth Proportional to 139,947.86, 193,121.06 and 79,510.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,947.86 : 193,121.06 = 79,510.52 : x
2. Step 2: Convert to fraction form
   139,947.86/193,121.06 = 79,510.52/x
3. Step 3: Cross multiply
   139,947.86x = 193,121.06 × 79,510.52
4. Step 4: Simplify right side
   139,947.86x = 15,355,155,903.55
5. Step 5: Solve for x
   x = 15,355,155,903.55/139,947.86
6. Step 6: Final answer
   x = 109,720.55