Finding the Fourth Proportional to 81,665.39, 112,716.06 and 58,756.43

Step by Step Solution

1. Step 1: Write the proportion equation
   81,665.39 : 112,716.06 = 58,756.43 : x
2. Step 2: Convert to fraction form
   81,665.39/112,716.06 = 58,756.43/x
3. Step 3: Cross multiply
   81,665.39x = 112,716.06 × 58,756.43
4. Step 4: Simplify right side
   81,665.39x = 6,622,793,350.72
5. Step 5: Solve for x
   x = 6,622,793,350.72/81,665.39
6. Step 6: Final answer
   x = 81,096.69