Finding the Fourth Proportional to 314,434.05, 434,188.73 and 304,266.15

Step by Step Solution

1. Step 1: Write the proportion equation
   314,434.05 : 434,188.73 = 304,266.15 : x
2. Step 2: Convert to fraction form
   314,434.05/434,188.73 = 304,266.15/x
3. Step 3: Cross multiply
   314,434.05x = 434,188.73 × 304,266.15
4. Step 4: Simplify right side
   314,434.05x = 132,108,935,096.63
5. Step 5: Solve for x
   x = 132,108,935,096.63/314,434.05
6. Step 6: Final answer
   x = 420,148.32