Finding the Fourth Proportional to 76,317.25, 105,314.13 and 42,323.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,317.25 : 105,314.13 = 42,323.05 : x
2. Step 2: Convert to fraction form
   76,317.25/105,314.13 = 42,323.05/x
3. Step 3: Cross multiply
   76,317.25x = 105,314.13 × 42,323.05
4. Step 4: Simplify right side
   76,317.25x = 4,457,215,189.70
5. Step 5: Solve for x
   x = 4,457,215,189.70/76,317.25
6. Step 6: Final answer
   x = 58,403.77