Finding the Fourth Proportional to 70,667.04, 105,769.80 and 51,942.12

Step by Step Solution

1. Step 1: Write the proportion equation
   70,667.04 : 105,769.80 = 51,942.12 : x
2. Step 2: Convert to fraction form
   70,667.04/105,769.80 = 51,942.12/x
3. Step 3: Cross multiply
   70,667.04x = 105,769.80 × 51,942.12
4. Step 4: Simplify right side
   70,667.04x = 5,493,907,643.98
5. Step 5: Solve for x
   x = 5,493,907,643.98/70,667.04
6. Step 6: Final answer
   x = 77,743.57