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Finding the Fourth Proportional to 231,978, 347,967 and 56,874

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Solution

The fourth proportional to 231,978, 347,967 and 56,874 is: 85,311

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,978 : 347,967 = 56,874 : x
  2. Step 2: Convert to fraction form
    231,978/347,967 = 56,874/x
  3. Step 3: Cross multiply
    231,978x = 347,967 × 56,874
  4. Step 4: Simplify right side
    231,978x = 19,790,275,158
  5. Step 5: Solve for x
    x = 19,790,275,158/231,978
  6. Step 6: Final answer
    x = 85,311

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