Finding the Fourth Proportional to 63,789.01, 87,936.60 and 42,242.60

Step by Step Solution

1. Step 1: Write the proportion equation
   63,789.01 : 87,936.60 = 42,242.60 : x
2. Step 2: Convert to fraction form
   63,789.01/87,936.60 = 42,242.60/x
3. Step 3: Cross multiply
   63,789.01x = 87,936.60 × 42,242.60
4. Step 4: Simplify right side
   63,789.01x = 3,714,670,619.16
5. Step 5: Solve for x
   x = 3,714,670,619.16/63,789.01
6. Step 6: Final answer
   x = 58,233.71