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Finding the Fourth Proportional to 263,196.80, 394,706.80 and 85,662.06

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Solution

The fourth proportional to 263,196.80, 394,706.80 and 85,662.06 is: 128,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,196.80 : 394,706.80 = 85,662.06 : x
  2. Step 2: Convert to fraction form
    263,196.80/394,706.80 = 85,662.06/x
  3. Step 3: Cross multiply
    263,196.80x = 394,706.80 × 85,662.06
  4. Step 4: Simplify right side
    263,196.80x = 33,811,397,691.09
  5. Step 5: Solve for x
    x = 33,811,397,691.09/263,196.80
  6. Step 6: Final answer
    x = 128,464.32

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