Finding the Fourth Proportional to 447,109.57, 616,693.93 and 274,801.29

Step by Step Solution

1. Step 1: Write the proportion equation
   447,109.57 : 616,693.93 = 274,801.29 : x
2. Step 2: Convert to fraction form
   447,109.57/616,693.93 = 274,801.29/x
3. Step 3: Cross multiply
   447,109.57x = 616,693.93 × 274,801.29
4. Step 4: Simplify right side
   447,109.57x = 169,468,287,499.17
5. Step 5: Solve for x
   x = 169,468,287,499.17/447,109.57
6. Step 6: Final answer
   x = 379,030.78