Finding the Fourth Proportional to 482,300.74, 723,601.68 and 290,385.54

Step by Step Solution

1. Step 1: Write the proportion equation
   482,300.74 : 723,601.68 = 290,385.54 : x
2. Step 2: Convert to fraction form
   482,300.74/723,601.68 = 290,385.54/x
3. Step 3: Cross multiply
   482,300.74x = 723,601.68 × 290,385.54
4. Step 4: Simplify right side
   482,300.74x = 210,123,464,591.71
5. Step 5: Solve for x
   x = 210,123,464,591.71/482,300.74
6. Step 6: Final answer
   x = 435,668.97