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Finding the Fourth Proportional to 84,007.80, 126,011.70 and 60,388.20

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Solution

The fourth proportional to 84,007.80, 126,011.70 and 60,388.20 is: 90,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,007.80 : 126,011.70 = 60,388.20 : x
  2. Step 2: Convert to fraction form
    84,007.80/126,011.70 = 60,388.20/x
  3. Step 3: Cross multiply
    84,007.80x = 126,011.70 × 60,388.20
  4. Step 4: Simplify right side
    84,007.80x = 7,609,619,741.94
  5. Step 5: Solve for x
    x = 7,609,619,741.94/84,007.80
  6. Step 6: Final answer
    x = 90,582.30

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