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Finding the Fourth Proportional to 172,666.60, 258,999.90 and 54,374.20

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Solution

The fourth proportional to 172,666.60, 258,999.90 and 54,374.20 is: 81,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,666.60 : 258,999.90 = 54,374.20 : x
  2. Step 2: Convert to fraction form
    172,666.60/258,999.90 = 54,374.20/x
  3. Step 3: Cross multiply
    172,666.60x = 258,999.90 × 54,374.20
  4. Step 4: Simplify right side
    172,666.60x = 14,082,912,362.58
  5. Step 5: Solve for x
    x = 14,082,912,362.58/172,666.60
  6. Step 6: Final answer
    x = 81,561.30

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