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Finding the Fourth Proportional to 101,958.72, 140,698.26 and 56,639.58

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Solution

The fourth proportional to 101,958.72, 140,698.26 and 56,639.58 is: 78,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,958.72 : 140,698.26 = 56,639.58 : x
  2. Step 2: Convert to fraction form
    101,958.72/140,698.26 = 56,639.58/x
  3. Step 3: Cross multiply
    101,958.72x = 140,698.26 × 56,639.58
  4. Step 4: Simplify right side
    101,958.72x = 7,969,090,353.13
  5. Step 5: Solve for x
    x = 7,969,090,353.13/101,958.72
  6. Step 6: Final answer
    x = 78,159.97

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