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Finding the Fourth Proportional to 78,682.59, 108,580.59 and 42,872.85

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Solution

The fourth proportional to 78,682.59, 108,580.59 and 42,872.85 is: 59,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,682.59 : 108,580.59 = 42,872.85 : x
  2. Step 2: Convert to fraction form
    78,682.59/108,580.59 = 42,872.85/x
  3. Step 3: Cross multiply
    78,682.59x = 108,580.59 × 42,872.85
  4. Step 4: Simplify right side
    78,682.59x = 4,655,159,347.98
  5. Step 5: Solve for x
    x = 4,655,159,347.98/78,682.59
  6. Step 6: Final answer
    x = 59,163.78

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