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Finding the Fourth Proportional to 42,713.39, 64,058.99 and 12,720.61

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Solution

The fourth proportional to 42,713.39, 64,058.99 and 12,720.61 is: 19,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,713.39 : 64,058.99 = 12,720.61 : x
  2. Step 2: Convert to fraction form
    42,713.39/64,058.99 = 12,720.61/x
  3. Step 3: Cross multiply
    42,713.39x = 64,058.99 × 12,720.61
  4. Step 4: Simplify right side
    42,713.39x = 814,869,300.44
  5. Step 5: Solve for x
    x = 814,869,300.44/42,713.39
  6. Step 6: Final answer
    x = 19,077.61

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