Finding the Fourth Proportional to 84,185.92, 126,300.77 and 42,064.30

Step by Step Solution

1. Step 1: Write the proportion equation
   84,185.92 : 126,300.77 = 42,064.30 : x
2. Step 2: Convert to fraction form
   84,185.92/126,300.77 = 42,064.30/x
3. Step 3: Cross multiply
   84,185.92x = 126,300.77 × 42,064.30
4. Step 4: Simplify right side
   84,185.92x = 5,312,753,479.51
5. Step 5: Solve for x
   x = 5,312,753,479.51/84,185.92
6. Step 6: Final answer
   x = 63,107.39