Finding the Fourth Proportional to 445,934.50, 615,389.61 and 267,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   445,934.50 : 615,389.61 = 267,086.50 : x
2. Step 2: Convert to fraction form
   445,934.50/615,389.61 = 267,086.50/x
3. Step 3: Cross multiply
   445,934.50x = 615,389.61 × 267,086.50
4. Step 4: Simplify right side
   445,934.50x = 164,362,257,071.27
5. Step 5: Solve for x
   x = 164,362,257,071.27/445,934.50
6. Step 6: Final answer
   x = 368,579.37