Finding the Fourth Proportional to 145,321.59, 200,562.59 and 81,659.39

Step by Step Solution

1. Step 1: Write the proportion equation
   145,321.59 : 200,562.59 = 81,659.39 : x
2. Step 2: Convert to fraction form
   145,321.59/200,562.59 = 81,659.39/x
3. Step 3: Cross multiply
   145,321.59x = 200,562.59 × 81,659.39
4. Step 4: Simplify right side
   145,321.59x = 16,377,819,200.55
5. Step 5: Solve for x
   x = 16,377,819,200.55/145,321.59
6. Step 6: Final answer
   x = 112,700.52