Finding the Fourth Proportional to 282,147.71, 389,061.83 and 213,393.29

Step by Step Solution

1. Step 1: Write the proportion equation
   282,147.71 : 389,061.83 = 213,393.29 : x
2. Step 2: Convert to fraction form
   282,147.71/389,061.83 = 213,393.29/x
3. Step 3: Cross multiply
   282,147.71x = 389,061.83 × 213,393.29
4. Step 4: Simplify right side
   282,147.71x = 83,023,182,505.29
5. Step 5: Solve for x
   x = 83,023,182,505.29/282,147.71
6. Step 6: Final answer
   x = 294,254.33