Finding the Fourth Proportional to 170,499.56, 255,749.31 and 58,179.78

Step by Step Solution

1. Step 1: Write the proportion equation
   170,499.56 : 255,749.31 = 58,179.78 : x
2. Step 2: Convert to fraction form
   170,499.56/255,749.31 = 58,179.78/x
3. Step 3: Cross multiply
   170,499.56x = 255,749.31 × 58,179.78
4. Step 4: Simplify right side
   170,499.56x = 14,879,437,021.31
5. Step 5: Solve for x
   x = 14,879,437,021.31/170,499.56
6. Step 6: Final answer
   x = 87,269.65