Finding the Fourth Proportional to 76,313.69, 105,312.89 and 42,327.38

Step by Step Solution

1. Step 1: Write the proportion equation
   76,313.69 : 105,312.89 = 42,327.38 : x
2. Step 2: Convert to fraction form
   76,313.69/105,312.89 = 42,327.38/x
3. Step 3: Cross multiply
   76,313.69x = 105,312.89 × 42,327.38
4. Step 4: Simplify right side
   76,313.69x = 4,457,618,713.93
5. Step 5: Solve for x
   x = 4,457,618,713.93/76,313.69
6. Step 6: Final answer
   x = 58,411.79