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Finding the Fourth Proportional to 245,278.62, 367,963.56 and 85,347.90

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Solution

The fourth proportional to 245,278.62, 367,963.56 and 85,347.90 is: 128,037.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,278.62 : 367,963.56 = 85,347.90 : x
  2. Step 2: Convert to fraction form
    245,278.62/367,963.56 = 85,347.90/x
  3. Step 3: Cross multiply
    245,278.62x = 367,963.56 × 85,347.90
  4. Step 4: Simplify right side
    245,278.62x = 31,404,917,122.52
  5. Step 5: Solve for x
    x = 31,404,917,122.52/245,278.62
  6. Step 6: Final answer
    x = 128,037.73

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