Finding the Fourth Proportional to 484,447, 668,536.86 and 272,479

Step by Step Solution

1. Step 1: Write the proportion equation
   484,447 : 668,536.86 = 272,479 : x
2. Step 2: Convert to fraction form
   484,447/668,536.86 = 272,479/x
3. Step 3: Cross multiply
   484,447x = 668,536.86 × 272,479
4. Step 4: Simplify right side
   484,447x = 182,162,255,075.94
5. Step 5: Solve for x
   x = 182,162,255,075.94/484,447
6. Step 6: Final answer
   x = 376,021.02