Finding the Fourth Proportional to 231,561.34, 319,571.82 and 129,597.02

Step by Step Solution

1. Step 1: Write the proportion equation
   231,561.34 : 319,571.82 = 129,597.02 : x
2. Step 2: Convert to fraction form
   231,561.34/319,571.82 = 129,597.02/x
3. Step 3: Cross multiply
   231,561.34x = 319,571.82 × 129,597.02
4. Step 4: Simplify right side
   231,561.34x = 41,415,555,547.98
5. Step 5: Solve for x
   x = 41,415,555,547.98/231,561.34
6. Step 6: Final answer
   x = 178,853.50