Finding the Fourth Proportional to 150,120.96, 207,142.56 and 83,040

Step by Step Solution

1. Step 1: Write the proportion equation
   150,120.96 : 207,142.56 = 83,040 : x
2. Step 2: Convert to fraction form
   150,120.96/207,142.56 = 83,040/x
3. Step 3: Cross multiply
   150,120.96x = 207,142.56 × 83,040
4. Step 4: Simplify right side
   150,120.96x = 17,201,118,182.40
5. Step 5: Solve for x
   x = 17,201,118,182.40/150,120.96
6. Step 6: Final answer
   x = 114,581.72