Finding the Fourth Proportional to 76,315.32, 105,313.23 and 42,323.31

Step by Step Solution

1. Step 1: Write the proportion equation
   76,315.32 : 105,313.23 = 42,323.31 : x
2. Step 2: Convert to fraction form
   76,315.32/105,313.23 = 42,323.31/x
3. Step 3: Cross multiply
   76,315.32x = 105,313.23 × 42,323.31
4. Step 4: Simplify right side
   76,315.32x = 4,457,204,480.39
5. Step 5: Solve for x
   x = 4,457,204,480.39/76,315.32
6. Step 6: Final answer
   x = 58,405.11