Finding the Fourth Proportional to 415,084.69, 572,817.72 and 242,971.57

Step by Step Solution

1. Step 1: Write the proportion equation
   415,084.69 : 572,817.72 = 242,971.57 : x
2. Step 2: Convert to fraction form
   415,084.69/572,817.72 = 242,971.57/x
3. Step 3: Cross multiply
   415,084.69x = 572,817.72 × 242,971.57
4. Step 4: Simplify right side
   415,084.69x = 139,178,420,752.22
5. Step 5: Solve for x
   x = 139,178,420,752.22/415,084.69
6. Step 6: Final answer
   x = 335,301.26