Finding the Fourth Proportional to 85,281.05, 117,640.59 and 59,825.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,281.05 : 117,640.59 = 59,825.31 : x
2. Step 2: Convert to fraction form
   85,281.05/117,640.59 = 59,825.31/x
3. Step 3: Cross multiply
   85,281.05x = 117,640.59 × 59,825.31
4. Step 4: Simplify right side
   85,281.05x = 7,037,884,765.33
5. Step 5: Solve for x
   x = 7,037,884,765.33/85,281.05
6. Step 6: Final answer
   x = 82,525.78