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Finding the Fourth Proportional to 140,652, 210,978 and 42,156

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Solution

The fourth proportional to 140,652, 210,978 and 42,156 is: 63,234

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,652 : 210,978 = 42,156 : x
  2. Step 2: Convert to fraction form
    140,652/210,978 = 42,156/x
  3. Step 3: Cross multiply
    140,652x = 210,978 × 42,156
  4. Step 4: Simplify right side
    140,652x = 8,893,988,568
  5. Step 5: Solve for x
    x = 8,893,988,568/140,652
  6. Step 6: Final answer
    x = 63,234

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