Finding the Fourth Proportional to 309,999.50, 465,003.58 and 88,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,999.50 : 465,003.58 = 88,383.50 : x
2. Step 2: Convert to fraction form
   309,999.50/465,003.58 = 88,383.50/x
3. Step 3: Cross multiply
   309,999.50x = 465,003.58 × 88,383.50
4. Step 4: Simplify right side
   309,999.50x = 41,098,643,912.93
5. Step 5: Solve for x
   x = 41,098,643,912.93/309,999.50
6. Step 6: Final answer
   x = 132,576.48