Finding the Fourth Proportional to 84,573.81, 126,844.83 and 42,442.58

Step by Step Solution

1. Step 1: Write the proportion equation
   84,573.81 : 126,844.83 = 42,442.58 : x
2. Step 2: Convert to fraction form
   84,573.81/126,844.83 = 42,442.58/x
3. Step 3: Cross multiply
   84,573.81x = 126,844.83 × 42,442.58
4. Step 4: Simplify right side
   84,573.81x = 5,383,621,844.86
5. Step 5: Solve for x
   x = 5,383,621,844.86/84,573.81
6. Step 6: Final answer
   x = 63,655.90