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Finding the Fourth Proportional to 56,760, 85,140.36 and 19,824

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Solution

The fourth proportional to 56,760, 85,140.36 and 19,824 is: 29,736.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,760 : 85,140.36 = 19,824 : x
  2. Step 2: Convert to fraction form
    56,760/85,140.36 = 19,824/x
  3. Step 3: Cross multiply
    56,760x = 85,140.36 × 19,824
  4. Step 4: Simplify right side
    56,760x = 1,687,822,496.64
  5. Step 5: Solve for x
    x = 1,687,822,496.64/56,760
  6. Step 6: Final answer
    x = 29,736.13

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