Finding the Fourth Proportional to 309,628.50, 464,520.78 and 88,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,628.50 : 464,520.78 = 88,012.50 : x
2. Step 2: Convert to fraction form
   309,628.50/464,520.78 = 88,012.50/x
3. Step 3: Cross multiply
   309,628.50x = 464,520.78 × 88,012.50
4. Step 4: Simplify right side
   309,628.50x = 40,883,635,149.75
5. Step 5: Solve for x
   x = 40,883,635,149.75/309,628.50
6. Step 6: Final answer
   x = 132,040.93