Finding the Fourth Proportional to 85,430.97, 128,156.72 and 35,544.83

Step by Step Solution

1. Step 1: Write the proportion equation
   85,430.97 : 128,156.72 = 35,544.83 : x
2. Step 2: Convert to fraction form
   85,430.97/128,156.72 = 35,544.83/x
3. Step 3: Cross multiply
   85,430.97x = 128,156.72 × 35,544.83
4. Step 4: Simplify right side
   85,430.97x = 4,555,308,007.25
5. Step 5: Solve for x
   x = 4,555,308,007.25/85,430.97
6. Step 6: Final answer
   x = 53,321.51