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Finding the Fourth Proportional to 68,978.61, 103,394.37 and 39,332.61

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Solution

The fourth proportional to 68,978.61, 103,394.37 and 39,332.61 is: 58,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,978.61 : 103,394.37 = 39,332.61 : x
  2. Step 2: Convert to fraction form
    68,978.61/103,394.37 = 39,332.61/x
  3. Step 3: Cross multiply
    68,978.61x = 103,394.37 × 39,332.61
  4. Step 4: Simplify right side
    68,978.61x = 4,066,770,431.41
  5. Step 5: Solve for x
    x = 4,066,770,431.41/68,978.61
  6. Step 6: Final answer
    x = 58,956.98

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