Finding the Fourth Proportional to 321,663.15, 443,886.57 and 185,692.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,663.15 : 443,886.57 = 185,692.50 : x
2. Step 2: Convert to fraction form
   321,663.15/443,886.57 = 185,692.50/x
3. Step 3: Cross multiply
   321,663.15x = 443,886.57 × 185,692.50
4. Step 4: Simplify right side
   321,663.15x = 82,426,406,899.73
5. Step 5: Solve for x
   x = 82,426,406,899.73/321,663.15
6. Step 6: Final answer
   x = 256,250.70