Finding the Fourth Proportional to 172,595.54, 258,922.83 and 79,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   172,595.54 : 258,922.83 = 79,109.30 : x
2. Step 2: Convert to fraction form
   172,595.54/258,922.83 = 79,109.30/x
3. Step 3: Cross multiply
   172,595.54x = 258,922.83 × 79,109.30
4. Step 4: Simplify right side
   172,595.54x = 20,483,203,835.32
5. Step 5: Solve for x
   x = 20,483,203,835.32/172,595.54
6. Step 6: Final answer
   x = 118,677.48