Finding the Fourth Proportional to 309,499.32, 464,217.86 and 84,882.34

Step by Step Solution

1. Step 1: Write the proportion equation
   309,499.32 : 464,217.86 = 84,882.34 : x
2. Step 2: Convert to fraction form
   309,499.32/464,217.86 = 84,882.34/x
3. Step 3: Cross multiply
   309,499.32x = 464,217.86 × 84,882.34
4. Step 4: Simplify right side
   309,499.32x = 39,403,899,019.07
5. Step 5: Solve for x
   x = 39,403,899,019.07/309,499.32
6. Step 6: Final answer
   x = 127,314.98