Finding the Fourth Proportional to 407,713.55, 611,300.39 and 194,514.37

Step by Step Solution

1. Step 1: Write the proportion equation
   407,713.55 : 611,300.39 = 194,514.37 : x
2. Step 2: Convert to fraction form
   407,713.55/611,300.39 = 194,514.37/x
3. Step 3: Cross multiply
   407,713.55x = 611,300.39 × 194,514.37
4. Step 4: Simplify right side
   407,713.55x = 118,906,707,740.78
5. Step 5: Solve for x
   x = 118,906,707,740.78/407,713.55
6. Step 6: Final answer
   x = 291,642.77