Finding the Fourth Proportional to 172,593.54, 258,919.83 and 79,107.30

Step by Step Solution

1. Step 1: Write the proportion equation
   172,593.54 : 258,919.83 = 79,107.30 : x
2. Step 2: Convert to fraction form
   172,593.54/258,919.83 = 79,107.30/x
3. Step 3: Cross multiply
   172,593.54x = 258,919.83 × 79,107.30
4. Step 4: Simplify right side
   172,593.54x = 20,482,448,667.76
5. Step 5: Solve for x
   x = 20,482,448,667.76/172,593.54
6. Step 6: Final answer
   x = 118,674.48