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Finding the Fourth Proportional to 79,771.80, 119,511.90 and 64,900.20

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Solution

The fourth proportional to 79,771.80, 119,511.90 and 64,900.20 is: 97,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,771.80 : 119,511.90 = 64,900.20 : x
  2. Step 2: Convert to fraction form
    79,771.80/119,511.90 = 64,900.20/x
  3. Step 3: Cross multiply
    79,771.80x = 119,511.90 × 64,900.20
  4. Step 4: Simplify right side
    79,771.80x = 7,756,346,212.38
  5. Step 5: Solve for x
    x = 7,756,346,212.38/79,771.80
  6. Step 6: Final answer
    x = 97,231.68

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