Finding the Fourth Proportional to 309,816.72, 464,715.36 and 88,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   309,816.72 : 464,715.36 = 88,200.72 : x
2. Step 2: Convert to fraction form
   309,816.72/464,715.36 = 88,200.72/x
3. Step 3: Cross multiply
   309,816.72x = 464,715.36 × 88,200.72
4. Step 4: Simplify right side
   309,816.72x = 40,988,229,347.06
5. Step 5: Solve for x
   x = 40,988,229,347.06/309,816.72
6. Step 6: Final answer
   x = 132,298.31