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Finding the Fourth Proportional to 85,042.72, 127,555.44 and 28,118.08

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Solution

The fourth proportional to 85,042.72, 127,555.44 and 28,118.08 is: 42,174.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,042.72 : 127,555.44 = 28,118.08 : x
  2. Step 2: Convert to fraction form
    85,042.72/127,555.44 = 28,118.08/x
  3. Step 3: Cross multiply
    85,042.72x = 127,555.44 × 28,118.08
  4. Step 4: Simplify right side
    85,042.72x = 3,586,614,066.36
  5. Step 5: Solve for x
    x = 3,586,614,066.36/85,042.72
  6. Step 6: Final answer
    x = 42,174.26

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