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Finding the Fourth Proportional to 84,231.37, 126,304.38 and 28,051.78

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Solution

The fourth proportional to 84,231.37, 126,304.38 and 28,051.78 is: 42,063.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,231.37 : 126,304.38 = 28,051.78 : x
  2. Step 2: Convert to fraction form
    84,231.37/126,304.38 = 28,051.78/x
  3. Step 3: Cross multiply
    84,231.37x = 126,304.38 × 28,051.78
  4. Step 4: Simplify right side
    84,231.37x = 3,543,062,261.49
  5. Step 5: Solve for x
    x = 3,543,062,261.49/84,231.37
  6. Step 6: Final answer
    x = 42,063.46

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