Finding the Fourth Proportional to 150,743.28, 208,015.32 and 83,670

Step by Step Solution

1. Step 1: Write the proportion equation
   150,743.28 : 208,015.32 = 83,670 : x
2. Step 2: Convert to fraction form
   150,743.28/208,015.32 = 83,670/x
3. Step 3: Cross multiply
   150,743.28x = 208,015.32 × 83,670
4. Step 4: Simplify right side
   150,743.28x = 17,404,641,824.40
5. Step 5: Solve for x
   x = 17,404,641,824.40/150,743.28
6. Step 6: Final answer
   x = 115,458.82