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Finding the Fourth Proportional to 78,363.83, 108,140.36 and 42,553.52

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Solution

The fourth proportional to 78,363.83, 108,140.36 and 42,553.52 is: 58,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,363.83 : 108,140.36 = 42,553.52 : x
  2. Step 2: Convert to fraction form
    78,363.83/108,140.36 = 42,553.52/x
  3. Step 3: Cross multiply
    78,363.83x = 108,140.36 × 42,553.52
  4. Step 4: Simplify right side
    78,363.83x = 4,601,752,218.60
  5. Step 5: Solve for x
    x = 4,601,752,218.60/78,363.83
  6. Step 6: Final answer
    x = 58,722.91

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