Finding the Fourth Proportional to 439,182, 606,071.16 and 237,978

Step by Step Solution

1. Step 1: Write the proportion equation
   439,182 : 606,071.16 = 237,978 : x
2. Step 2: Convert to fraction form
   439,182/606,071.16 = 237,978/x
3. Step 3: Cross multiply
   439,182x = 606,071.16 × 237,978
4. Step 4: Simplify right side
   439,182x = 144,231,602,514.48
5. Step 5: Solve for x
   x = 144,231,602,514.48/439,182
6. Step 6: Final answer
   x = 328,409.64