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Finding the Fourth Proportional to 78,091.86, 116,865.63 and 63,887.70

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Solution

The fourth proportional to 78,091.86, 116,865.63 and 63,887.70 is: 95,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,091.86 : 116,865.63 = 63,887.70 : x
  2. Step 2: Convert to fraction form
    78,091.86/116,865.63 = 63,887.70/x
  3. Step 3: Cross multiply
    78,091.86x = 116,865.63 × 63,887.70
  4. Step 4: Simplify right side
    78,091.86x = 7,466,276,309.75
  5. Step 5: Solve for x
    x = 7,466,276,309.75/78,091.86
  6. Step 6: Final answer
    x = 95,608.89

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