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Finding the Fourth Proportional to 209,895.36, 289,665.12 and 123,858.88

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Solution

The fourth proportional to 209,895.36, 289,665.12 and 123,858.88 is: 170,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,895.36 : 289,665.12 = 123,858.88 : x
  2. Step 2: Convert to fraction form
    209,895.36/289,665.12 = 123,858.88/x
  3. Step 3: Cross multiply
    209,895.36x = 289,665.12 × 123,858.88
  4. Step 4: Simplify right side
    209,895.36x = 35,877,597,338.27
  5. Step 5: Solve for x
    x = 35,877,597,338.27/209,895.36
  6. Step 6: Final answer
    x = 170,930.87

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