Finding the Fourth Proportional to 315,021.98, 434,740.83 and 171,789.86

Step by Step Solution

1. Step 1: Write the proportion equation
   315,021.98 : 434,740.83 = 171,789.86 : x
2. Step 2: Convert to fraction form
   315,021.98/434,740.83 = 171,789.86/x
3. Step 3: Cross multiply
   315,021.98x = 434,740.83 × 171,789.86
4. Step 4: Simplify right side
   315,021.98x = 74,684,066,321.98
5. Step 5: Solve for x
   x = 74,684,066,321.98/315,021.98
6. Step 6: Final answer
   x = 237,075.73