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Finding the Fourth Proportional to 69,978,634.05, 104,960,863.85 and 18,865,819.65

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Solution

The fourth proportional to 69,978,634.05, 104,960,863.85 and 18,865,819.65 is: 28,296,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,978,634.05 : 104,960,863.85 = 18,865,819.65 : x
  2. Step 2: Convert to fraction form
    69,978,634.05/104,960,863.85 = 18,865,819.65/x
  3. Step 3: Cross multiply
    69,978,634.05x = 104,960,863.85 × 18,865,819.65
  4. Step 4: Simplify right side
    69,978,634.05x = 1,980,172,727,607,975.50
  5. Step 5: Solve for x
    x = 1,980,172,727,607,975.50/69,978,634.05
  6. Step 6: Final answer
    x = 28,296,818.80

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