Finding the Fourth Proportional to 79,667.12, 109,869.72 and 62,870.96

Step by Step Solution

1. Step 1: Write the proportion equation
   79,667.12 : 109,869.72 = 62,870.96 : x
2. Step 2: Convert to fraction form
   79,667.12/109,869.72 = 62,870.96/x
3. Step 3: Cross multiply
   79,667.12x = 109,869.72 × 62,870.96
4. Step 4: Simplify right side
   79,667.12x = 6,907,614,771.33
5. Step 5: Solve for x
   x = 6,907,614,771.33/79,667.12
6. Step 6: Final answer
   x = 86,705.97