Finding the Fourth Proportional to 445,948.43, 615,920.10 and 293,667.62

Step by Step Solution

1. Step 1: Write the proportion equation
   445,948.43 : 615,920.10 = 293,667.62 : x
2. Step 2: Convert to fraction form
   445,948.43/615,920.10 = 293,667.62/x
3. Step 3: Cross multiply
   445,948.43x = 615,920.10 × 293,667.62
4. Step 4: Simplify right side
   445,948.43x = 180,875,786,797.56
5. Step 5: Solve for x
   x = 180,875,786,797.56/445,948.43
6. Step 6: Final answer
   x = 405,597.99