Finding the Fourth Proportional to 72,355.37, 99,853.49 and 42,135.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,355.37 : 99,853.49 = 42,135.82 : x
2. Step 2: Convert to fraction form
   72,355.37/99,853.49 = 42,135.82/x
3. Step 3: Cross multiply
   72,355.37x = 99,853.49 × 42,135.82
4. Step 4: Simplify right side
   72,355.37x = 4,207,408,470.33
5. Step 5: Solve for x
   x = 4,207,408,470.33/72,355.37
6. Step 6: Final answer
   x = 58,149.22