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Finding the Fourth Proportional to 66,978, 92,429.64 and 37,170

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Solution

The fourth proportional to 66,978, 92,429.64 and 37,170 is: 51,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978 : 92,429.64 = 37,170 : x
  2. Step 2: Convert to fraction form
    66,978/92,429.64 = 37,170/x
  3. Step 3: Cross multiply
    66,978x = 92,429.64 × 37,170
  4. Step 4: Simplify right side
    66,978x = 3,435,609,718.80
  5. Step 5: Solve for x
    x = 3,435,609,718.80/66,978
  6. Step 6: Final answer
    x = 51,294.60

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