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Finding the Fourth Proportional to 153,999.72, 212,505.78 and 86,007.24

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Solution

The fourth proportional to 153,999.72, 212,505.78 and 86,007.24 is: 118,682.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,999.72 : 212,505.78 = 86,007.24 : x
  2. Step 2: Convert to fraction form
    153,999.72/212,505.78 = 86,007.24/x
  3. Step 3: Cross multiply
    153,999.72x = 212,505.78 × 86,007.24
  4. Step 4: Simplify right side
    153,999.72x = 18,277,035,621.85
  5. Step 5: Solve for x
    x = 18,277,035,621.85/153,999.72
  6. Step 6: Final answer
    x = 118,682.27

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