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Finding the Fourth Proportional to 212,156.73, 318,236.91 and 54,386.55

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Solution

The fourth proportional to 212,156.73, 318,236.91 and 54,386.55 is: 81,580.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,156.73 : 318,236.91 = 54,386.55 : x
  2. Step 2: Convert to fraction form
    212,156.73/318,236.91 = 54,386.55/x
  3. Step 3: Cross multiply
    212,156.73x = 318,236.91 × 54,386.55
  4. Step 4: Simplify right side
    212,156.73x = 17,307,807,617.56
  5. Step 5: Solve for x
    x = 17,307,807,617.56/212,156.73
  6. Step 6: Final answer
    x = 81,580.29

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