Finding the Fourth Proportional to 311,666, 467,576.76 and 90,050

Step by Step Solution

1. Step 1: Write the proportion equation
   311,666 : 467,576.76 = 90,050 : x
2. Step 2: Convert to fraction form
   311,666/467,576.76 = 90,050/x
3. Step 3: Cross multiply
   311,666x = 467,576.76 × 90,050
4. Step 4: Simplify right side
   311,666x = 42,105,287,238
5. Step 5: Solve for x
   x = 42,105,287,238/311,666
6. Step 6: Final answer
   x = 135,097.47