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Finding the Fourth Proportional to 60,699.12, 91,059.09 and 18,578.16

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Solution

The fourth proportional to 60,699.12, 91,059.09 and 18,578.16 is: 27,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,699.12 : 91,059.09 = 18,578.16 : x
  2. Step 2: Convert to fraction form
    60,699.12/91,059.09 = 18,578.16/x
  3. Step 3: Cross multiply
    60,699.12x = 91,059.09 × 18,578.16
  4. Step 4: Simplify right side
    60,699.12x = 1,691,710,273.81
  5. Step 5: Solve for x
    x = 1,691,710,273.81/60,699.12
  6. Step 6: Final answer
    x = 27,870.42

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