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Finding the Fourth Proportional to 78,054.56, 107,715.28 and 42,244.84

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Solution

The fourth proportional to 78,054.56, 107,715.28 and 42,244.84 is: 58,297.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,054.56 : 107,715.28 = 42,244.84 : x
  2. Step 2: Convert to fraction form
    78,054.56/107,715.28 = 42,244.84/x
  3. Step 3: Cross multiply
    78,054.56x = 107,715.28 × 42,244.84
  4. Step 4: Simplify right side
    78,054.56x = 4,550,414,769.16
  5. Step 5: Solve for x
    x = 4,550,414,769.16/78,054.56
  6. Step 6: Final answer
    x = 58,297.87

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