Finding the Fourth Proportional to 585,061.50, 807,384.87 and 316,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   585,061.50 : 807,384.87 = 316,789.50 : x
2. Step 2: Convert to fraction form
   585,061.50/807,384.87 = 316,789.50/x
3. Step 3: Cross multiply
   585,061.50x = 807,384.87 × 316,789.50
4. Step 4: Simplify right side
   585,061.50x = 255,771,049,274.87
5. Step 5: Solve for x
   x = 255,771,049,274.87/585,061.50
6. Step 6: Final answer
   x = 437,169.51