Finding the Fourth Proportional to 394,150.56, 591,221.52 and 113,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   394,150.56 : 591,221.52 = 113,658.72 : x
2. Step 2: Convert to fraction form
   394,150.56/591,221.52 = 113,658.72/x
3. Step 3: Cross multiply
   394,150.56x = 591,221.52 × 113,658.72
4. Step 4: Simplify right side
   394,150.56x = 67,197,481,199.65
5. Step 5: Solve for x
   x = 67,197,481,199.65/394,150.56
6. Step 6: Final answer
   x = 170,486.83