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Finding the Fourth Proportional to 74,414.80, 111,427.80 and 70,915.60

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Solution

The fourth proportional to 74,414.80, 111,427.80 and 70,915.60 is: 106,188.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,414.80 : 111,427.80 = 70,915.60 : x
  2. Step 2: Convert to fraction form
    74,414.80/111,427.80 = 70,915.60/x
  3. Step 3: Cross multiply
    74,414.80x = 111,427.80 × 70,915.60
  4. Step 4: Simplify right side
    74,414.80x = 7,901,969,293.68
  5. Step 5: Solve for x
    x = 7,901,969,293.68/74,414.80
  6. Step 6: Final answer
    x = 106,188.14

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