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Finding the Fourth Proportional to 154,662.84, 213,449.70 and 86,691.36

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Solution

The fourth proportional to 154,662.84, 213,449.70 and 86,691.36 is: 119,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,662.84 : 213,449.70 = 86,691.36 : x
  2. Step 2: Convert to fraction form
    154,662.84/213,449.70 = 86,691.36/x
  3. Step 3: Cross multiply
    154,662.84x = 213,449.70 × 86,691.36
  4. Step 4: Simplify right side
    154,662.84x = 18,504,244,784.59
  5. Step 5: Solve for x
    x = 18,504,244,784.59/154,662.84
  6. Step 6: Final answer
    x = 119,642.47

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