Finding the Fourth Proportional to 150,017.67, 207,024.46 and 85,485.07

Step by Step Solution

1. Step 1: Write the proportion equation
   150,017.67 : 207,024.46 = 85,485.07 : x
2. Step 2: Convert to fraction form
   150,017.67/207,024.46 = 85,485.07/x
3. Step 3: Cross multiply
   150,017.67x = 207,024.46 × 85,485.07
4. Step 4: Simplify right side
   150,017.67x = 17,697,500,499.88
5. Step 5: Solve for x
   x = 17,697,500,499.88/150,017.67
6. Step 6: Final answer
   x = 117,969.44