Finding the Fourth Proportional to 204,064.56, 306,200.52 and 91,722.15

Step by Step Solution

1. Step 1: Write the proportion equation
   204,064.56 : 306,200.52 = 91,722.15 : x
2. Step 2: Convert to fraction form
   204,064.56/306,200.52 = 91,722.15/x
3. Step 3: Cross multiply
   204,064.56x = 306,200.52 × 91,722.15
4. Step 4: Simplify right side
   204,064.56x = 28,085,370,025.52
5. Step 5: Solve for x
   x = 28,085,370,025.52/204,064.56
6. Step 6: Final answer
   x = 137,629.83