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Finding the Fourth Proportional to 58,426.80, 87,661.80 and 18,985.20

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Solution

The fourth proportional to 58,426.80, 87,661.80 and 18,985.20 is: 28,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,426.80 : 87,661.80 = 18,985.20 : x
  2. Step 2: Convert to fraction form
    58,426.80/87,661.80 = 18,985.20/x
  3. Step 3: Cross multiply
    58,426.80x = 87,661.80 × 18,985.20
  4. Step 4: Simplify right side
    58,426.80x = 1,664,276,805.36
  5. Step 5: Solve for x
    x = 1,664,276,805.36/58,426.80
  6. Step 6: Final answer
    x = 28,484.82

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