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Finding the Fourth Proportional to 171,410.60, 257,261.70 and 76,786.40

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Solution

The fourth proportional to 171,410.60, 257,261.70 and 76,786.40 is: 115,244.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,410.60 : 257,261.70 = 76,786.40 : x
  2. Step 2: Convert to fraction form
    171,410.60/257,261.70 = 76,786.40/x
  3. Step 3: Cross multiply
    171,410.60x = 257,261.70 × 76,786.40
  4. Step 4: Simplify right side
    171,410.60x = 19,754,199,800.88
  5. Step 5: Solve for x
    x = 19,754,199,800.88/171,410.60
  6. Step 6: Final answer
    x = 115,244.91

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