Finding the Fourth Proportional to 401,456.58, 602,059.32 and 145,256.82

Step by Step Solution

1. Step 1: Write the proportion equation
   401,456.58 : 602,059.32 = 145,256.82 : x
2. Step 2: Convert to fraction form
   401,456.58/602,059.32 = 145,256.82/x
3. Step 3: Cross multiply
   401,456.58x = 602,059.32 × 145,256.82
4. Step 4: Simplify right side
   401,456.58x = 87,453,222,274.56
5. Step 5: Solve for x
   x = 87,453,222,274.56/401,456.58
6. Step 6: Final answer
   x = 217,839.80