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Finding the Fourth Proportional to 123,028.83, 169,779.78 and 66,440.20

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Solution

The fourth proportional to 123,028.83, 169,779.78 and 66,440.20 is: 91,687.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,028.83 : 169,779.78 = 66,440.20 : x
  2. Step 2: Convert to fraction form
    123,028.83/169,779.78 = 66,440.20/x
  3. Step 3: Cross multiply
    123,028.83x = 169,779.78 × 66,440.20
  4. Step 4: Simplify right side
    123,028.83x = 11,280,202,539.16
  5. Step 5: Solve for x
    x = 11,280,202,539.16/123,028.83
  6. Step 6: Final answer
    x = 91,687.47

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