Finding the Fourth Proportional to 85,556.33, 128,356.37 and 35,619.83

Step by Step Solution

1. Step 1: Write the proportion equation
   85,556.33 : 128,356.37 = 35,619.83 : x
2. Step 2: Convert to fraction form
   85,556.33/128,356.37 = 35,619.83/x
3. Step 3: Cross multiply
   85,556.33x = 128,356.37 × 35,619.83
4. Step 4: Simplify right side
   85,556.33x = 4,572,032,488.76
5. Step 5: Solve for x
   x = 4,572,032,488.76/85,556.33
6. Step 6: Final answer
   x = 53,438.86