Finding the Fourth Proportional to 447,667.16, 617,782.28 and 243,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   447,667.16 : 617,782.28 = 243,720.50 : x
2. Step 2: Convert to fraction form
   447,667.16/617,782.28 = 243,720.50/x
3. Step 3: Cross multiply
   447,667.16x = 617,782.28 × 243,720.50
4. Step 4: Simplify right side
   447,667.16x = 150,566,201,865.23
5. Step 5: Solve for x
   x = 150,566,201,865.23/447,667.16
6. Step 6: Final answer
   x = 336,335.15