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Finding the Fourth Proportional to 120,639.34, 166,502.25 and 66,941.66

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Solution

The fourth proportional to 120,639.34, 166,502.25 and 66,941.66 is: 92,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,639.34 : 166,502.25 = 66,941.66 : x
  2. Step 2: Convert to fraction form
    120,639.34/166,502.25 = 66,941.66/x
  3. Step 3: Cross multiply
    120,639.34x = 166,502.25 × 66,941.66
  4. Step 4: Simplify right side
    120,639.34x = 11,145,936,863.37
  5. Step 5: Solve for x
    x = 11,145,936,863.37/120,639.34
  6. Step 6: Final answer
    x = 92,390.56

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