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Finding the Fourth Proportional to 57,617.70, 86,345.55 and 45,791.70

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Solution

The fourth proportional to 57,617.70, 86,345.55 and 45,791.70 is: 68,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,617.70 : 86,345.55 = 45,791.70 : x
  2. Step 2: Convert to fraction form
    57,617.70/86,345.55 = 45,791.70/x
  3. Step 3: Cross multiply
    57,617.70x = 86,345.55 × 45,791.70
  4. Step 4: Simplify right side
    57,617.70x = 3,953,909,521.94
  5. Step 5: Solve for x
    x = 3,953,909,521.94/57,617.70
  6. Step 6: Final answer
    x = 68,623.18

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