Finding the Fourth Proportional to 389,806.58, 584,782.74 and 123,495.59

Step by Step Solution

1. Step 1: Write the proportion equation
   389,806.58 : 584,782.74 = 123,495.59 : x
2. Step 2: Convert to fraction form
   389,806.58/584,782.74 = 123,495.59/x
3. Step 3: Cross multiply
   389,806.58x = 584,782.74 × 123,495.59
4. Step 4: Simplify right side
   389,806.58x = 72,218,089,498.12
5. Step 5: Solve for x
   x = 72,218,089,498.12/389,806.58
6. Step 6: Final answer
   x = 185,266.47