Finding the Fourth Proportional to 70,667.76, 105,770.91 and 51,942.87

Step by Step Solution

1. Step 1: Write the proportion equation
   70,667.76 : 105,770.91 = 51,942.87 : x
2. Step 2: Convert to fraction form
   70,667.76/105,770.91 = 51,942.87/x
3. Step 3: Cross multiply
   70,667.76x = 105,770.91 × 51,942.87
4. Step 4: Simplify right side
   70,667.76x = 5,494,044,627.91
5. Step 5: Solve for x
   x = 5,494,044,627.91/70,667.76
6. Step 6: Final answer
   x = 77,744.71