Finding the Fourth Proportional to 389,887.31, 584,851.59 and 109,426.43

Step by Step Solution

1. Step 1: Write the proportion equation
   389,887.31 : 584,851.59 = 109,426.43 : x
2. Step 2: Convert to fraction form
   389,887.31/584,851.59 = 109,426.43/x
3. Step 3: Cross multiply
   389,887.31x = 584,851.59 × 109,426.43
4. Step 4: Simplify right side
   389,887.31x = 63,998,221,573.52
5. Step 5: Solve for x
   x = 63,998,221,573.52/389,887.31
6. Step 6: Final answer
   x = 164,145.43