Finding the Fourth Proportional to 421,482.42, 632,224.17 and 172,164.42

Step by Step Solution

1. Step 1: Write the proportion equation
   421,482.42 : 632,224.17 = 172,164.42 : x
2. Step 2: Convert to fraction form
   421,482.42/632,224.17 = 172,164.42/x
3. Step 3: Cross multiply
   421,482.42x = 632,224.17 × 172,164.42
4. Step 4: Simplify right side
   421,482.42x = 108,846,507,538.03
5. Step 5: Solve for x
   x = 108,846,507,538.03/421,482.42
6. Step 6: Final answer
   x = 258,246.85