Finding the Fourth Proportional to 389,752.88, 584,645.58 and 123,507.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,752.88 : 584,645.58 = 123,507.50 : x
2. Step 2: Convert to fraction form
   389,752.88/584,645.58 = 123,507.50/x
3. Step 3: Cross multiply
   389,752.88x = 584,645.58 × 123,507.50
4. Step 4: Simplify right side
   389,752.88x = 72,208,113,971.85
5. Step 5: Solve for x
   x = 72,208,113,971.85/389,752.88
6. Step 6: Final answer
   x = 185,266.40