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Finding the Fourth Proportional to 208,616.48, 312,949.16 and 66,411.94

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Solution

The fourth proportional to 208,616.48, 312,949.16 and 66,411.94 is: 99,625.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,616.48 : 312,949.16 = 66,411.94 : x
  2. Step 2: Convert to fraction form
    208,616.48/312,949.16 = 66,411.94/x
  3. Step 3: Cross multiply
    208,616.48x = 312,949.16 × 66,411.94
  4. Step 4: Simplify right side
    208,616.48x = 20,783,560,836.97
  5. Step 5: Solve for x
    x = 20,783,560,836.97/208,616.48
  6. Step 6: Final answer
    x = 99,625.69

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