Finding the Fourth Proportional to 389,738.10, 584,623.53 and 123,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   389,738.10 : 584,623.53 = 123,492.72 : x
2. Step 2: Convert to fraction form
   389,738.10/584,623.53 = 123,492.72/x
3. Step 3: Cross multiply
   389,738.10x = 584,623.53 × 123,492.72
4. Step 4: Simplify right side
   389,738.10x = 72,196,749,895.70
5. Step 5: Solve for x
   x = 72,196,749,895.70/389,738.10
6. Step 6: Final answer
   x = 185,244.27