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Finding the Fourth Proportional to 68,978,936.80, 103,380,487.80 and 36,646,328.80

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Solution

The fourth proportional to 68,978,936.80, 103,380,487.80 and 36,646,328.80 is: 54,922,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,978,936.80 : 103,380,487.80 = 36,646,328.80 : x
  2. Step 2: Convert to fraction form
    68,978,936.80/103,380,487.80 = 36,646,328.80/x
  3. Step 3: Cross multiply
    68,978,936.80x = 103,380,487.80 × 36,646,328.80
  4. Step 4: Simplify right side
    68,978,936.80x = 3,788,515,347,423,188
  5. Step 5: Solve for x
    x = 3,788,515,347,423,188/68,978,936.80
  6. Step 6: Final answer
    x = 54,922,785.46

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