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Finding the Fourth Proportional to 90,069.78, 135,102.35 and 29,279.72

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Solution

The fourth proportional to 90,069.78, 135,102.35 and 29,279.72 is: 43,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,069.78 : 135,102.35 = 29,279.72 : x
  2. Step 2: Convert to fraction form
    90,069.78/135,102.35 = 29,279.72/x
  3. Step 3: Cross multiply
    90,069.78x = 135,102.35 × 29,279.72
  4. Step 4: Simplify right side
    90,069.78x = 3,955,758,157.43
  5. Step 5: Solve for x
    x = 3,955,758,157.43/90,069.78
  6. Step 6: Final answer
    x = 43,918.82

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