Finding the Fourth Proportional to 493,978.60, 681,691.16 and 267,624.10

Step by Step Solution

1. Step 1: Write the proportion equation
   493,978.60 : 681,691.16 = 267,624.10 : x
2. Step 2: Convert to fraction form
   493,978.60/681,691.16 = 267,624.10/x
3. Step 3: Cross multiply
   493,978.60x = 681,691.16 × 267,624.10
4. Step 4: Simplify right side
   493,978.60x = 182,436,978,426.38
5. Step 5: Solve for x
   x = 182,436,978,426.38/493,978.60
6. Step 6: Final answer
   x = 369,321.63