Finding the Fourth Proportional to 84,579.58, 126,809.34 and 42,429.34

Step by Step Solution

1. Step 1: Write the proportion equation
   84,579.58 : 126,809.34 = 42,429.34 : x
2. Step 2: Convert to fraction form
   84,579.58/126,809.34 = 42,429.34/x
3. Step 3: Cross multiply
   84,579.58x = 126,809.34 × 42,429.34
4. Step 4: Simplify right side
   84,579.58x = 5,380,436,602.04
5. Step 5: Solve for x
   x = 5,380,436,602.04/84,579.58
6. Step 6: Final answer
   x = 63,613.90