Finding the Fourth Proportional to 381,538.82, 526,523.86 and 228,665.76

Step by Step Solution

1. Step 1: Write the proportion equation
   381,538.82 : 526,523.86 = 228,665.76 : x
2. Step 2: Convert to fraction form
   381,538.82/526,523.86 = 228,665.76/x
3. Step 3: Cross multiply
   381,538.82x = 526,523.86 × 228,665.76
4. Step 4: Simplify right side
   381,538.82x = 120,397,978,605.03
5. Step 5: Solve for x
   x = 120,397,978,605.03/381,538.82
6. Step 6: Final answer
   x = 315,558.92