Finding the Fourth Proportional to 76,776.72, 115,162.32 and 26,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,776.72 : 115,162.32 = 26,856.72 : x
2. Step 2: Convert to fraction form
   76,776.72/115,162.32 = 26,856.72/x
3. Step 3: Cross multiply
   76,776.72x = 115,162.32 × 26,856.72
4. Step 4: Simplify right side
   76,776.72x = 3,092,882,182.79
5. Step 5: Solve for x
   x = 3,092,882,182.79/76,776.72
6. Step 6: Final answer
   x = 40,284.11