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Finding the Fourth Proportional to 442,856,978.20, 664,281,968.10 and 115,331,858.20

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Solution

The fourth proportional to 442,856,978.20, 664,281,968.10 and 115,331,858.20 is: 172,996,876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,856,978.20 : 664,281,968.10 = 115,331,858.20 : x
  2. Step 2: Convert to fraction form
    442,856,978.20/664,281,968.10 = 115,331,858.20/x
  3. Step 3: Cross multiply
    442,856,978.20x = 664,281,968.10 × 115,331,858.20
  4. Step 4: Simplify right side
    442,856,978.20x = 76,612,873,749,726,128
  5. Step 5: Solve for x
    x = 76,612,873,749,726,128/442,856,978.20
  6. Step 6: Final answer
    x = 172,996,876.01

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