Finding the Fourth Proportional to 231,597.83, 319,604.54 and 129,622.88

Step by Step Solution

1. Step 1: Write the proportion equation
   231,597.83 : 319,604.54 = 129,622.88 : x
2. Step 2: Convert to fraction form
   231,597.83/319,604.54 = 129,622.88/x
3. Step 3: Cross multiply
   231,597.83x = 319,604.54 × 129,622.88
4. Step 4: Simplify right side
   231,597.83x = 41,428,061,086.77
5. Step 5: Solve for x
   x = 41,428,061,086.77/231,597.83
6. Step 6: Final answer
   x = 178,879.31