Finding the Fourth Proportional to 72,360.27, 99,858.22 and 42,144.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,360.27 : 99,858.22 = 42,144.80 : x
2. Step 2: Convert to fraction form
   72,360.27/99,858.22 = 42,144.80/x
3. Step 3: Cross multiply
   72,360.27x = 99,858.22 × 42,144.80
4. Step 4: Simplify right side
   72,360.27x = 4,208,504,105.60
5. Step 5: Solve for x
   x = 4,208,504,105.60/72,360.27
6. Step 6: Final answer
   x = 58,160.43