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Finding the Fourth Proportional to 76,764,198.70, 114,978,336.45 and 66,686,502.70

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Solution

The fourth proportional to 76,764,198.70, 114,978,336.45 and 66,686,502.70 is: 99,883,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,764,198.70 : 114,978,336.45 = 66,686,502.70 : x
  2. Step 2: Convert to fraction form
    76,764,198.70/114,978,336.45 = 66,686,502.70/x
  3. Step 3: Cross multiply
    76,764,198.70x = 114,978,336.45 × 66,686,502.70
  4. Step 4: Simplify right side
    76,764,198.70x = 7,667,503,144,114,434
  5. Step 5: Solve for x
    x = 7,667,503,144,114,434/76,764,198.70
  6. Step 6: Final answer
    x = 99,883,842.65

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