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Finding the Fourth Proportional to 78,571.78, 108,426.98 and 42,761.03

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Solution

The fourth proportional to 78,571.78, 108,426.98 and 42,761.03 is: 59,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,571.78 : 108,426.98 = 42,761.03 : x
  2. Step 2: Convert to fraction form
    78,571.78/108,426.98 = 42,761.03/x
  3. Step 3: Cross multiply
    78,571.78x = 108,426.98 × 42,761.03
  4. Step 4: Simplify right side
    78,571.78x = 4,636,449,344.59
  5. Step 5: Solve for x
    x = 4,636,449,344.59/78,571.78
  6. Step 6: Final answer
    x = 59,009.09

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