Finding the Fourth Proportional to 279,423, 419,173.92 and 89,819.82

Step by Step Solution

1. Step 1: Write the proportion equation
   279,423 : 419,173.92 = 89,819.82 : x
2. Step 2: Convert to fraction form
   279,423/419,173.92 = 89,819.82/x
3. Step 3: Cross multiply
   279,423x = 419,173.92 × 89,819.82
4. Step 4: Simplify right side
   279,423x = 37,650,126,043.09
5. Step 5: Solve for x
   x = 37,650,126,043.09/279,423
6. Step 6: Final answer
   x = 134,742.40