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Finding the Fourth Proportional to 56,813.92, 78,544.92 and 42,642.16

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Solution

The fourth proportional to 56,813.92, 78,544.92 and 42,642.16 is: 58,952.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,813.92 : 78,544.92 = 42,642.16 : x
  2. Step 2: Convert to fraction form
    56,813.92/78,544.92 = 42,642.16/x
  3. Step 3: Cross multiply
    56,813.92x = 78,544.92 × 42,642.16
  4. Step 4: Simplify right side
    56,813.92x = 3,349,325,009.37
  5. Step 5: Solve for x
    x = 3,349,325,009.37/56,813.92
  6. Step 6: Final answer
    x = 58,952.54

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