Finding the Fourth Proportional to 58,242.72, 80,268.36 and 42,299.48

Step by Step Solution

1. Step 1: Write the proportion equation
   58,242.72 : 80,268.36 = 42,299.48 : x
2. Step 2: Convert to fraction form
   58,242.72/80,268.36 = 42,299.48/x
3. Step 3: Cross multiply
   58,242.72x = 80,268.36 × 42,299.48
4. Step 4: Simplify right side
   58,242.72x = 3,395,309,888.45
5. Step 5: Solve for x
   x = 3,395,309,888.45/58,242.72
6. Step 6: Final answer
   x = 58,295.87