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Finding the Fourth Proportional to 336,405,666.40, 504,608,499.60 and 90,761,826.40

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Solution

The fourth proportional to 336,405,666.40, 504,608,499.60 and 90,761,826.40 is: 136,142,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,405,666.40 : 504,608,499.60 = 90,761,826.40 : x
  2. Step 2: Convert to fraction form
    336,405,666.40/504,608,499.60 = 90,761,826.40/x
  3. Step 3: Cross multiply
    336,405,666.40x = 504,608,499.60 × 90,761,826.40
  4. Step 4: Simplify right side
    336,405,666.40x = 45,799,189,040,659,672
  5. Step 5: Solve for x
    x = 45,799,189,040,659,672/336,405,666.40
  6. Step 6: Final answer
    x = 136,142,739.60

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