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Finding the Fourth Proportional to 72,821.05, 100,469.01 and 59,369.18

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Solution

The fourth proportional to 72,821.05, 100,469.01 and 59,369.18 is: 81,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821.05 : 100,469.01 = 59,369.18 : x
  2. Step 2: Convert to fraction form
    72,821.05/100,469.01 = 59,369.18/x
  3. Step 3: Cross multiply
    72,821.05x = 100,469.01 × 59,369.18
  4. Step 4: Simplify right side
    72,821.05x = 5,964,762,739.11
  5. Step 5: Solve for x
    x = 5,964,762,739.11/72,821.05
  6. Step 6: Final answer
    x = 81,909.87

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