Finding the Fourth Proportional to 58,242.78, 80,268.42 and 42,299.52

Step by Step Solution

1. Step 1: Write the proportion equation
   58,242.78 : 80,268.42 = 42,299.52 : x
2. Step 2: Convert to fraction form
   58,242.78/80,268.42 = 42,299.52/x
3. Step 3: Cross multiply
   58,242.78x = 80,268.42 × 42,299.52
4. Step 4: Simplify right side
   58,242.78x = 3,395,315,637.16
5. Step 5: Solve for x
   x = 3,395,315,637.16/58,242.78
6. Step 6: Final answer
   x = 58,295.91