Finding the Fourth Proportional to 318,555.42, 477,910.89 and 96,939.42

Step by Step Solution

1. Step 1: Write the proportion equation
   318,555.42 : 477,910.89 = 96,939.42 : x
2. Step 2: Convert to fraction form
   318,555.42/477,910.89 = 96,939.42/x
3. Step 3: Cross multiply
   318,555.42x = 477,910.89 × 96,939.42
4. Step 4: Simplify right side
   318,555.42x = 46,328,404,488.28
5. Step 5: Solve for x
   x = 46,328,404,488.28/318,555.42
6. Step 6: Final answer
   x = 145,432.79