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Finding the Fourth Proportional to 70,446.57, 105,673.56 and 17,856.51

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Solution

The fourth proportional to 70,446.57, 105,673.56 and 17,856.51 is: 26,785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,446.57 : 105,673.56 = 17,856.51 : x
  2. Step 2: Convert to fraction form
    70,446.57/105,673.56 = 17,856.51/x
  3. Step 3: Cross multiply
    70,446.57x = 105,673.56 × 17,856.51
  4. Step 4: Simplify right side
    70,446.57x = 1,886,960,980.88
  5. Step 5: Solve for x
    x = 1,886,960,980.88/70,446.57
  6. Step 6: Final answer
    x = 26,785.70

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