Finding the Fourth Proportional to 407,980.43, 563,002.77 and 226,692.83

Step by Step Solution

1. Step 1: Write the proportion equation
   407,980.43 : 563,002.77 = 226,692.83 : x
2. Step 2: Convert to fraction form
   407,980.43/563,002.77 = 226,692.83/x
3. Step 3: Cross multiply
   407,980.43x = 563,002.77 × 226,692.83
4. Step 4: Simplify right side
   407,980.43x = 127,628,689,522.89
5. Step 5: Solve for x
   x = 127,628,689,522.89/407,980.43
6. Step 6: Final answer
   x = 312,830.42