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Finding the Fourth Proportional to 78,408.63, 117,435.03 and 49,945.74

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Solution

The fourth proportional to 78,408.63, 117,435.03 and 49,945.74 is: 74,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,408.63 : 117,435.03 = 49,945.74 : x
  2. Step 2: Convert to fraction form
    78,408.63/117,435.03 = 49,945.74/x
  3. Step 3: Cross multiply
    78,408.63x = 117,435.03 × 49,945.74
  4. Step 4: Simplify right side
    78,408.63x = 5,865,379,475.27
  5. Step 5: Solve for x
    x = 5,865,379,475.27/78,408.63
  6. Step 6: Final answer
    x = 74,805.28

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