Finding the Fourth Proportional to 172,301.72, 258,423.42 and 47,613.56

Step by Step Solution

1. Step 1: Write the proportion equation
   172,301.72 : 258,423.42 = 47,613.56 : x
2. Step 2: Convert to fraction form
   172,301.72/258,423.42 = 47,613.56/x
3. Step 3: Cross multiply
   172,301.72x = 258,423.42 × 47,613.56
4. Step 4: Simplify right side
   172,301.72x = 12,304,459,659.63
5. Step 5: Solve for x
   x = 12,304,459,659.63/172,301.72
6. Step 6: Final answer
   x = 71,412.28