Finding the Fourth Proportional to 311,730.50, 467,673.51 and 90,114.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,730.50 : 467,673.51 = 90,114.50 : x
2. Step 2: Convert to fraction form
   311,730.50/467,673.51 = 90,114.50/x
3. Step 3: Cross multiply
   311,730.50x = 467,673.51 × 90,114.50
4. Step 4: Simplify right side
   311,730.50x = 42,144,164,516.90
5. Step 5: Solve for x
   x = 42,144,164,516.90/311,730.50
6. Step 6: Final answer
   x = 135,194.23