Finding the Fourth Proportional to 76,212.37, 105,179.52 and 42,231.51

Step by Step Solution

1. Step 1: Write the proportion equation
   76,212.37 : 105,179.52 = 42,231.51 : x
2. Step 2: Convert to fraction form
   76,212.37/105,179.52 = 42,231.51/x
3. Step 3: Cross multiply
   76,212.37x = 105,179.52 × 42,231.51
4. Step 4: Simplify right side
   76,212.37x = 4,441,890,109.04
5. Step 5: Solve for x
   x = 4,441,890,109.04/76,212.37
6. Step 6: Final answer
   x = 58,283.06