Finding the Fourth Proportional to 253,002.08, 379,196.18 and 185,819.21

Step by Step Solution

1. Step 1: Write the proportion equation
   253,002.08 : 379,196.18 = 185,819.21 : x
2. Step 2: Convert to fraction form
   253,002.08/379,196.18 = 185,819.21/x
3. Step 3: Cross multiply
   253,002.08x = 379,196.18 × 185,819.21
4. Step 4: Simplify right side
   253,002.08x = 70,461,937,074.56
5. Step 5: Solve for x
   x = 70,461,937,074.56/253,002.08
6. Step 6: Final answer
   x = 278,503.39