Finding the Fourth Proportional to 76,256.79, 105,238.25 and 43,979.41

Step by Step Solution

1. Step 1: Write the proportion equation
   76,256.79 : 105,238.25 = 43,979.41 : x
2. Step 2: Convert to fraction form
   76,256.79/105,238.25 = 43,979.41/x
3. Step 3: Cross multiply
   76,256.79x = 105,238.25 × 43,979.41
4. Step 4: Simplify right side
   76,256.79x = 4,628,316,144.43
5. Step 5: Solve for x
   x = 4,628,316,144.43/76,256.79
6. Step 6: Final answer
   x = 60,693.82