Finding the Fourth Proportional to 85,749.69, 128,624.61 and 35,802.56

Step by Step Solution

1. Step 1: Write the proportion equation
   85,749.69 : 128,624.61 = 35,802.56 : x
2. Step 2: Convert to fraction form
   85,749.69/128,624.61 = 35,802.56/x
3. Step 3: Cross multiply
   85,749.69x = 128,624.61 × 35,802.56
4. Step 4: Simplify right side
   85,749.69x = 4,605,090,317.00
5. Step 5: Solve for x
   x = 4,605,090,317.00/85,749.69
6. Step 6: Final answer
   x = 53,703.87