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Finding the Fourth Proportional to 78,576.33, 117,682.20 and 45,213.69

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Solution

The fourth proportional to 78,576.33, 117,682.20 and 45,213.69 is: 67,715.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,576.33 : 117,682.20 = 45,213.69 : x
  2. Step 2: Convert to fraction form
    78,576.33/117,682.20 = 45,213.69/x
  3. Step 3: Cross multiply
    78,576.33x = 117,682.20 × 45,213.69
  4. Step 4: Simplify right side
    78,576.33x = 5,320,846,509.32
  5. Step 5: Solve for x
    x = 5,320,846,509.32/78,576.33
  6. Step 6: Final answer
    x = 67,715.64

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