Finding the Fourth Proportional to 398,557.50, 549,981.81 and 224,153.82

Step by Step Solution

1. Step 1: Write the proportion equation
   398,557.50 : 549,981.81 = 224,153.82 : x
2. Step 2: Convert to fraction form
   398,557.50/549,981.81 = 224,153.82/x
3. Step 3: Cross multiply
   398,557.50x = 549,981.81 × 224,153.82
4. Step 4: Simplify right side
   398,557.50x = 123,280,523,642.01
5. Step 5: Solve for x
   x = 123,280,523,642.01/398,557.50
6. Step 6: Final answer
   x = 309,316.78