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Finding the Fourth Proportional to 81,329.52, 122,004.12 and 28,728.24

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Solution

The fourth proportional to 81,329.52, 122,004.12 and 28,728.24 is: 43,095.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,329.52 : 122,004.12 = 28,728.24 : x
  2. Step 2: Convert to fraction form
    81,329.52/122,004.12 = 28,728.24/x
  3. Step 3: Cross multiply
    81,329.52x = 122,004.12 × 28,728.24
  4. Step 4: Simplify right side
    81,329.52x = 3,504,963,640.35
  5. Step 5: Solve for x
    x = 3,504,963,640.35/81,329.52
  6. Step 6: Final answer
    x = 43,095.84

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