Finding the Fourth Proportional to 385,610.56, 532,142.24 and 213,528.52

Step by Step Solution

1. Step 1: Write the proportion equation
   385,610.56 : 532,142.24 = 213,528.52 : x
2. Step 2: Convert to fraction form
   385,610.56/532,142.24 = 213,528.52/x
3. Step 3: Cross multiply
   385,610.56x = 532,142.24 × 213,528.52
4. Step 4: Simplify right side
   385,610.56x = 113,627,544,936.69
5. Step 5: Solve for x
   x = 113,627,544,936.69/385,610.56
6. Step 6: Final answer
   x = 294,669.17