Finding the Fourth Proportional to 286,743.42, 429,524.52 and 168,128.73

Step by Step Solution

1. Step 1: Write the proportion equation
   286,743.42 : 429,524.52 = 168,128.73 : x
2. Step 2: Convert to fraction form
   286,743.42/429,524.52 = 168,128.73/x
3. Step 3: Cross multiply
   286,743.42x = 429,524.52 × 168,128.73
4. Step 4: Simplify right side
   286,743.42x = 72,215,412,051.46
5. Step 5: Solve for x
   x = 72,215,412,051.46/286,743.42
6. Step 6: Final answer
   x = 251,846.80