Finding the Fourth Proportional to 502,499.55, 693,558.75 and 309,073.52

Step by Step Solution

1. Step 1: Write the proportion equation
   502,499.55 : 693,558.75 = 309,073.52 : x
2. Step 2: Convert to fraction form
   502,499.55/693,558.75 = 309,073.52/x
3. Step 3: Cross multiply
   502,499.55x = 693,558.75 × 309,073.52
4. Step 4: Simplify right side
   502,499.55x = 214,360,647,082.22
5. Step 5: Solve for x
   x = 214,360,647,082.22/502,499.55
6. Step 6: Final answer
   x = 426,588.74