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Finding the Fourth Proportional to 121,580.80, 167,857.36 and 78,582.80

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Solution

The fourth proportional to 121,580.80, 167,857.36 and 78,582.80 is: 108,493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,580.80 : 167,857.36 = 78,582.80 : x
  2. Step 2: Convert to fraction form
    121,580.80/167,857.36 = 78,582.80/x
  3. Step 3: Cross multiply
    121,580.80x = 167,857.36 × 78,582.80
  4. Step 4: Simplify right side
    121,580.80x = 13,190,701,349.41
  5. Step 5: Solve for x
    x = 13,190,701,349.41/121,580.80
  6. Step 6: Final answer
    x = 108,493.29

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