Finding the Fourth Proportional to 150,680.52, 207,945.63 and 90,261

Step by Step Solution

1. Step 1: Write the proportion equation
   150,680.52 : 207,945.63 = 90,261 : x
2. Step 2: Convert to fraction form
   150,680.52/207,945.63 = 90,261/x
3. Step 3: Cross multiply
   150,680.52x = 207,945.63 × 90,261
4. Step 4: Simplify right side
   150,680.52x = 18,769,380,509.43
5. Step 5: Solve for x
   x = 18,769,380,509.43/150,680.52
6. Step 6: Final answer
   x = 124,564.08