Finding the Fourth Proportional to 422,503.69, 583,055.09 and 243,655.69

Step by Step Solution

1. Step 1: Write the proportion equation
   422,503.69 : 583,055.09 = 243,655.69 : x
2. Step 2: Convert to fraction form
   422,503.69/583,055.09 = 243,655.69/x
3. Step 3: Cross multiply
   422,503.69x = 583,055.09 × 243,655.69
4. Step 4: Simplify right side
   422,503.69x = 142,064,688,499.76
5. Step 5: Solve for x
   x = 142,064,688,499.76/422,503.69
6. Step 6: Final answer
   x = 336,244.85