Finding the Fourth Proportional to 90,105.14, 135,143.52 and 30,133.16

Step by Step Solution

1. Step 1: Write the proportion equation
   90,105.14 : 135,143.52 = 30,133.16 : x
2. Step 2: Convert to fraction form
   90,105.14/135,143.52 = 30,133.16/x
3. Step 3: Cross multiply
   90,105.14x = 135,143.52 × 30,133.16
4. Step 4: Simplify right side
   90,105.14x = 4,072,301,311.12
5. Step 5: Solve for x
   x = 4,072,301,311.12/90,105.14
6. Step 6: Final answer
   x = 45,194.99