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Finding the Fourth Proportional to 78,681.42, 108,578.99 and 42,871.73

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Solution

The fourth proportional to 78,681.42, 108,578.99 and 42,871.73 is: 59,162.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,681.42 : 108,578.99 = 42,871.73 : x
  2. Step 2: Convert to fraction form
    78,681.42/108,578.99 = 42,871.73/x
  3. Step 3: Cross multiply
    78,681.42x = 108,578.99 × 42,871.73
  4. Step 4: Simplify right side
    78,681.42x = 4,654,968,707.24
  5. Step 5: Solve for x
    x = 4,654,968,707.24/78,681.42
  6. Step 6: Final answer
    x = 59,162.24

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