Finding the Fourth Proportional to 398,061.84, 548,745 and 302,402.48

Step by Step Solution

1. Step 1: Write the proportion equation
   398,061.84 : 548,745 = 302,402.48 : x
2. Step 2: Convert to fraction form
   398,061.84/548,745 = 302,402.48/x
3. Step 3: Cross multiply
   398,061.84x = 548,745 × 302,402.48
4. Step 4: Simplify right side
   398,061.84x = 165,941,848,887.60
5. Step 5: Solve for x
   x = 165,941,848,887.60/398,061.84
6. Step 6: Final answer
   x = 416,874.55