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Finding the Fourth Proportional to 78,495.12, 108,323.46 and 42,685.11

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Solution

The fourth proportional to 78,495.12, 108,323.46 and 42,685.11 is: 58,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,495.12 : 108,323.46 = 42,685.11 : x
  2. Step 2: Convert to fraction form
    78,495.12/108,323.46 = 42,685.11/x
  3. Step 3: Cross multiply
    78,495.12x = 108,323.46 × 42,685.11
  4. Step 4: Simplify right side
    78,495.12x = 4,623,798,805.68
  5. Step 5: Solve for x
    x = 4,623,798,805.68/78,495.12
  6. Step 6: Final answer
    x = 58,905.56

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