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Finding the Fourth Proportional to 86,889.78, 119,907.84 and 47,145.78

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Solution

The fourth proportional to 86,889.78, 119,907.84 and 47,145.78 is: 65,061.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,889.78 : 119,907.84 = 47,145.78 : x
  2. Step 2: Convert to fraction form
    86,889.78/119,907.84 = 47,145.78/x
  3. Step 3: Cross multiply
    86,889.78x = 119,907.84 × 47,145.78
  4. Step 4: Simplify right side
    86,889.78x = 5,653,148,644.92
  5. Step 5: Solve for x
    x = 5,653,148,644.92/86,889.78
  6. Step 6: Final answer
    x = 65,061.15

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