Finding the Fourth Proportional to 72,584.32, 108,840.48 and 42,605.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,584.32 : 108,840.48 = 42,605.68 : x
2. Step 2: Convert to fraction form
   72,584.32/108,840.48 = 42,605.68/x
3. Step 3: Cross multiply
   72,584.32x = 108,840.48 × 42,605.68
4. Step 4: Simplify right side
   72,584.32x = 4,637,222,661.93
5. Step 5: Solve for x
   x = 4,637,222,661.93/72,584.32
6. Step 6: Final answer
   x = 63,887.39