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Finding the Fourth Proportional to 101,978, 140,736.84 and 57,266

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Solution

The fourth proportional to 101,978, 140,736.84 and 57,266 is: 79,031.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,978 : 140,736.84 = 57,266 : x
  2. Step 2: Convert to fraction form
    101,978/140,736.84 = 57,266/x
  3. Step 3: Cross multiply
    101,978x = 140,736.84 × 57,266
  4. Step 4: Simplify right side
    101,978x = 8,059,435,879.44
  5. Step 5: Solve for x
    x = 8,059,435,879.44/101,978
  6. Step 6: Final answer
    x = 79,031.12

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