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Finding the Fourth Proportional to 108,909,978.20, 163,364,967.30 and 84,251,115.80

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Solution

The fourth proportional to 108,909,978.20, 163,364,967.30 and 84,251,115.80 is: 126,376,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,909,978.20 : 163,364,967.30 = 84,251,115.80 : x
  2. Step 2: Convert to fraction form
    108,909,978.20/163,364,967.30 = 84,251,115.80/x
  3. Step 3: Cross multiply
    108,909,978.20x = 163,364,967.30 × 84,251,115.80
  4. Step 4: Simplify right side
    108,909,978.20x = 13,763,680,777,655,514
  5. Step 5: Solve for x
    x = 13,763,680,777,655,514/108,909,978.20
  6. Step 6: Final answer
    x = 126,376,673.70

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