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Finding the Fourth Proportional to 264,078.30, 396,117.45 and 77,089.80

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Solution

The fourth proportional to 264,078.30, 396,117.45 and 77,089.80 is: 115,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,078.30 : 396,117.45 = 77,089.80 : x
  2. Step 2: Convert to fraction form
    264,078.30/396,117.45 = 77,089.80/x
  3. Step 3: Cross multiply
    264,078.30x = 396,117.45 × 77,089.80
  4. Step 4: Simplify right side
    264,078.30x = 30,536,614,997.01
  5. Step 5: Solve for x
    x = 30,536,614,997.01/264,078.30
  6. Step 6: Final answer
    x = 115,634.70

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