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Finding the Fourth Proportional to 105,912.78, 158,890.98 and 31,035.36

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Solution

The fourth proportional to 105,912.78, 158,890.98 and 31,035.36 is: 46,559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,912.78 : 158,890.98 = 31,035.36 : x
  2. Step 2: Convert to fraction form
    105,912.78/158,890.98 = 31,035.36/x
  3. Step 3: Cross multiply
    105,912.78x = 158,890.98 × 31,035.36
  4. Step 4: Simplify right side
    105,912.78x = 4,931,238,765.05
  5. Step 5: Solve for x
    x = 4,931,238,765.05/105,912.78
  6. Step 6: Final answer
    x = 46,559.43

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