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Finding the Fourth Proportional to 82,111.72, 123,042.30 and 42,681.64

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Solution

The fourth proportional to 82,111.72, 123,042.30 and 42,681.64 is: 63,957.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,111.72 : 123,042.30 = 42,681.64 : x
  2. Step 2: Convert to fraction form
    82,111.72/123,042.30 = 42,681.64/x
  3. Step 3: Cross multiply
    82,111.72x = 123,042.30 × 42,681.64
  4. Step 4: Simplify right side
    82,111.72x = 5,251,647,153.37
  5. Step 5: Solve for x
    x = 5,251,647,153.37/82,111.72
  6. Step 6: Final answer
    x = 63,957.34

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