Finding the Fourth Proportional to 290,562.57, 434,906.37 and 150,128.01

Step by Step Solution

1. Step 1: Write the proportion equation
   290,562.57 : 434,906.37 = 150,128.01 : x
2. Step 2: Convert to fraction form
   290,562.57/434,906.37 = 150,128.01/x
3. Step 3: Cross multiply
   290,562.57x = 434,906.37 × 150,128.01
4. Step 4: Simplify right side
   290,562.57x = 65,291,627,864.42
5. Step 5: Solve for x
   x = 65,291,627,864.42/290,562.57
6. Step 6: Final answer
   x = 224,707.63