Finding the Fourth Proportional to 399,780.82, 599,253.27 and 189,167.86

Step by Step Solution

1. Step 1: Write the proportion equation
   399,780.82 : 599,253.27 = 189,167.86 : x
2. Step 2: Convert to fraction form
   399,780.82/599,253.27 = 189,167.86/x
3. Step 3: Cross multiply
   399,780.82x = 599,253.27 × 189,167.86
4. Step 4: Simplify right side
   399,780.82x = 113,359,458,683.90
5. Step 5: Solve for x
   x = 113,359,458,683.90/399,780.82
6. Step 6: Final answer
   x = 283,554.02