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Finding the Fourth Proportional to 85,404.70, 128,184.79 and 45,457.22

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Solution

The fourth proportional to 85,404.70, 128,184.79 and 45,457.22 is: 68,227.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,404.70 : 128,184.79 = 45,457.22 : x
  2. Step 2: Convert to fraction form
    85,404.70/128,184.79 = 45,457.22/x
  3. Step 3: Cross multiply
    85,404.70x = 128,184.79 × 45,457.22
  4. Step 4: Simplify right side
    85,404.70x = 5,826,924,199.68
  5. Step 5: Solve for x
    x = 5,826,924,199.68/85,404.70
  6. Step 6: Final answer
    x = 68,227.21

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