Finding the Fourth Proportional to 150,513.57, 207,709.01 and 83,445.57

Step by Step Solution

1. Step 1: Write the proportion equation
   150,513.57 : 207,709.01 = 83,445.57 : x
2. Step 2: Convert to fraction form
   150,513.57/207,709.01 = 83,445.57/x
3. Step 3: Cross multiply
   150,513.57x = 207,709.01 × 83,445.57
4. Step 4: Simplify right side
   150,513.57x = 17,332,396,733.59
5. Step 5: Solve for x
   x = 17,332,396,733.59/150,513.57
6. Step 6: Final answer
   x = 115,155.04