Finding the Fourth Proportional to 86,667.20, 119,656.32 and 70,789.76

Step by Step Solution

1. Step 1: Write the proportion equation
   86,667.20 : 119,656.32 = 70,789.76 : x
2. Step 2: Convert to fraction form
   86,667.20/119,656.32 = 70,789.76/x
3. Step 3: Cross multiply
   86,667.20x = 119,656.32 × 70,789.76
4. Step 4: Simplify right side
   86,667.20x = 8,470,442,175.28
5. Step 5: Solve for x
   x = 8,470,442,175.28/86,667.20
6. Step 6: Final answer
   x = 97,735.27