Finding the Fourth Proportional to 355,890,320.16, 491,086,638.72 and 205,181,279.52

Step by Step Solution

1. Step 1: Write the proportion equation
   355,890,320.16 : 491,086,638.72 = 205,181,279.52 : x
2. Step 2: Convert to fraction form
   355,890,320.16/491,086,638.72 = 205,181,279.52/x
3. Step 3: Cross multiply
   355,890,320.16x = 491,086,638.72 × 205,181,279.52
4. Step 4: Simplify right side
   355,890,320.16x = 100,761,784,887,745,584
5. Step 5: Solve for x
   x = 100,761,784,887,745,584/355,890,320.16
6. Step 6: Final answer
   x = 283,125,949.71