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Finding the Fourth Proportional to 68,654.85, 102,993.38 and 21,258.80

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Solution

The fourth proportional to 68,654.85, 102,993.38 and 21,258.80 is: 31,891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,654.85 : 102,993.38 = 21,258.80 : x
  2. Step 2: Convert to fraction form
    68,654.85/102,993.38 = 21,258.80/x
  3. Step 3: Cross multiply
    68,654.85x = 102,993.38 × 21,258.80
  4. Step 4: Simplify right side
    68,654.85x = 2,189,516,113.79
  5. Step 5: Solve for x
    x = 2,189,516,113.79/68,654.85
  6. Step 6: Final answer
    x = 31,891.64

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