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Finding the Fourth Proportional to 79,136.88, 109,217.70 and 45,153.78

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Solution

The fourth proportional to 79,136.88, 109,217.70 and 45,153.78 is: 62,317.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,136.88 : 109,217.70 = 45,153.78 : x
  2. Step 2: Convert to fraction form
    79,136.88/109,217.70 = 45,153.78/x
  3. Step 3: Cross multiply
    79,136.88x = 109,217.70 × 45,153.78
  4. Step 4: Simplify right side
    79,136.88x = 4,931,591,997.91
  5. Step 5: Solve for x
    x = 4,931,591,997.91/79,136.88
  6. Step 6: Final answer
    x = 62,317.24

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