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Finding the Fourth Proportional to 78,878.22, 108,967.10 and 68,249.40

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Solution

The fourth proportional to 78,878.22, 108,967.10 and 68,249.40 is: 94,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,878.22 : 108,967.10 = 68,249.40 : x
  2. Step 2: Convert to fraction form
    78,878.22/108,967.10 = 68,249.40/x
  3. Step 3: Cross multiply
    78,878.22x = 108,967.10 × 68,249.40
  4. Step 4: Simplify right side
    78,878.22x = 7,436,938,853.49
  5. Step 5: Solve for x
    x = 7,436,938,853.49/78,878.22
  6. Step 6: Final answer
    x = 94,283.81

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