Finding the Fourth Proportional to 129,770.56, 194,706.72 and 50,871.28

Step by Step Solution

1. Step 1: Write the proportion equation
   129,770.56 : 194,706.72 = 50,871.28 : x
2. Step 2: Convert to fraction form
   129,770.56/194,706.72 = 50,871.28/x
3. Step 3: Cross multiply
   129,770.56x = 194,706.72 × 50,871.28
4. Step 4: Simplify right side
   129,770.56x = 9,904,980,071.00
5. Step 5: Solve for x
   x = 9,904,980,071.00/129,770.56
6. Step 6: Final answer
   x = 76,326.87