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Finding the Fourth Proportional to 108,662.80, 162,994.20 and 66,672.40

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Solution

The fourth proportional to 108,662.80, 162,994.20 and 66,672.40 is: 100,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,662.80 : 162,994.20 = 66,672.40 : x
  2. Step 2: Convert to fraction form
    108,662.80/162,994.20 = 66,672.40/x
  3. Step 3: Cross multiply
    108,662.80x = 162,994.20 × 66,672.40
  4. Step 4: Simplify right side
    108,662.80x = 10,867,214,500.08
  5. Step 5: Solve for x
    x = 10,867,214,500.08/108,662.80
  6. Step 6: Final answer
    x = 100,008.60

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