Finding the Fourth Proportional to 76,086.64, 114,107.61 and 28,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,086.64 : 114,107.61 = 28,667.50 : x
2. Step 2: Convert to fraction form
   76,086.64/114,107.61 = 28,667.50/x
3. Step 3: Cross multiply
   76,086.64x = 114,107.61 × 28,667.50
4. Step 4: Simplify right side
   76,086.64x = 3,271,179,909.68
5. Step 5: Solve for x
   x = 3,271,179,909.68/76,086.64
6. Step 6: Final answer
   x = 42,992.83