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Finding the Fourth Proportional to 85,755.96, 128,632.77 and 26,591.67

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Solution

The fourth proportional to 85,755.96, 128,632.77 and 26,591.67 is: 39,887.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755.96 : 128,632.77 = 26,591.67 : x
  2. Step 2: Convert to fraction form
    85,755.96/128,632.77 = 26,591.67/x
  3. Step 3: Cross multiply
    85,755.96x = 128,632.77 × 26,591.67
  4. Step 4: Simplify right side
    85,755.96x = 3,420,560,171.03
  5. Step 5: Solve for x
    x = 3,420,560,171.03/85,755.96
  6. Step 6: Final answer
    x = 39,887.14

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