Finding the Fourth Proportional to 342,900.53, 474,105.71 and 300,336.95

Step by Step Solution

1. Step 1: Write the proportion equation
   342,900.53 : 474,105.71 = 300,336.95 : x
2. Step 2: Convert to fraction form
   342,900.53/474,105.71 = 300,336.95/x
3. Step 3: Cross multiply
   342,900.53x = 474,105.71 × 300,336.95
4. Step 4: Simplify right side
   342,900.53x = 142,391,459,046.77
5. Step 5: Solve for x
   x = 142,391,459,046.77/342,900.53
6. Step 6: Final answer
   x = 415,255.88