Finding the Fourth Proportional to 427,645.89, 590,217.59 and 243,884.86

Step by Step Solution

1. Step 1: Write the proportion equation
   427,645.89 : 590,217.59 = 243,884.86 : x
2. Step 2: Convert to fraction form
   427,645.89/590,217.59 = 243,884.86/x
3. Step 3: Cross multiply
   427,645.89x = 590,217.59 × 243,884.86
4. Step 4: Simplify right side
   427,645.89x = 143,945,133,440.86
5. Step 5: Solve for x
   x = 143,945,133,440.86/427,645.89
6. Step 6: Final answer
   x = 336,598.89