Finding the Fourth Proportional to 139,947.34, 193,120.04 and 79,509.59

Step by Step Solution

1. Step 1: Write the proportion equation
   139,947.34 : 193,120.04 = 79,509.59 : x
2. Step 2: Convert to fraction form
   139,947.34/193,120.04 = 79,509.59/x
3. Step 3: Cross multiply
   139,947.34x = 193,120.04 × 79,509.59
4. Step 4: Simplify right side
   139,947.34x = 15,354,895,201.18
5. Step 5: Solve for x
   x = 15,354,895,201.18/139,947.34
6. Step 6: Final answer
   x = 109,719.09