Finding the Fourth Proportional to 76,313.72, 105,312.94 and 42,327.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,313.72 : 105,312.94 = 42,327.42 : x
2. Step 2: Convert to fraction form
   76,313.72/105,312.94 = 42,327.42/x
3. Step 3: Cross multiply
   76,313.72x = 105,312.94 × 42,327.42
4. Step 4: Simplify right side
   76,313.72x = 4,457,625,042.81
5. Step 5: Solve for x
   x = 4,457,625,042.81/76,313.72
6. Step 6: Final answer
   x = 58,411.84