Finding the Fourth Proportional to 42,218.78, 58,259.67 and 23,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,218.78 : 58,259.67 = 23,355.50 : x
2. Step 2: Convert to fraction form
   42,218.78/58,259.67 = 23,355.50/x
3. Step 3: Cross multiply
   42,218.78x = 58,259.67 × 23,355.50
4. Step 4: Simplify right side
   42,218.78x = 1,360,683,722.69
5. Step 5: Solve for x
   x = 1,360,683,722.69/42,218.78
6. Step 6: Final answer
   x = 32,229.35