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Finding the Fourth Proportional to 129,589.04, 178,866.28 and 84,379.98

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Solution

The fourth proportional to 129,589.04, 178,866.28 and 84,379.98 is: 116,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,589.04 : 178,866.28 = 84,379.98 : x
  2. Step 2: Convert to fraction form
    129,589.04/178,866.28 = 84,379.98/x
  3. Step 3: Cross multiply
    129,589.04x = 178,866.28 × 84,379.98
  4. Step 4: Simplify right side
    129,589.04x = 15,092,733,129.07
  5. Step 5: Solve for x
    x = 15,092,733,129.07/129,589.04
  6. Step 6: Final answer
    x = 116,466.12

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