Finding the Fourth Proportional to 279,109.72, 418,669.34 and 79,435.24

Step by Step Solution

1. Step 1: Write the proportion equation
   279,109.72 : 418,669.34 = 79,435.24 : x
2. Step 2: Convert to fraction form
   279,109.72/418,669.34 = 79,435.24/x
3. Step 3: Cross multiply
   279,109.72x = 418,669.34 × 79,435.24
4. Step 4: Simplify right side
   279,109.72x = 33,257,099,503.54
5. Step 5: Solve for x
   x = 33,257,099,503.54/279,109.72
6. Step 6: Final answer
   x = 119,154.21