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Finding the Fourth Proportional to 79,748.20, 119,639.46 and 39,788.67

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Solution

The fourth proportional to 79,748.20, 119,639.46 and 39,788.67 is: 59,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,748.20 : 119,639.46 = 39,788.67 : x
  2. Step 2: Convert to fraction form
    79,748.20/119,639.46 = 39,788.67/x
  3. Step 3: Cross multiply
    79,748.20x = 119,639.46 × 39,788.67
  4. Step 4: Simplify right side
    79,748.20x = 4,760,295,092.73
  5. Step 5: Solve for x
    x = 4,760,295,092.73/79,748.20
  6. Step 6: Final answer
    x = 59,691.57

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