Finding the Fourth Proportional to 85,499.94, 128,217.06 and 35,603.58

Step by Step Solution

1. Step 1: Write the proportion equation
   85,499.94 : 128,217.06 = 35,603.58 : x
2. Step 2: Convert to fraction form
   85,499.94/128,217.06 = 35,603.58/x
3. Step 3: Cross multiply
   85,499.94x = 128,217.06 × 35,603.58
4. Step 4: Simplify right side
   85,499.94x = 4,564,986,353.07
5. Step 5: Solve for x
   x = 4,564,986,353.07/85,499.94
6. Step 6: Final answer
   x = 53,391.69