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Finding the Fourth Proportional to 120,628.72, 166,467.48 and 66,921.88

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Solution

The fourth proportional to 120,628.72, 166,467.48 and 66,921.88 is: 92,352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,628.72 : 166,467.48 = 66,921.88 : x
  2. Step 2: Convert to fraction form
    120,628.72/166,467.48 = 66,921.88/x
  3. Step 3: Cross multiply
    120,628.72x = 166,467.48 × 66,921.88
  4. Step 4: Simplify right side
    120,628.72x = 11,140,316,720.46
  5. Step 5: Solve for x
    x = 11,140,316,720.46/120,628.72
  6. Step 6: Final answer
    x = 92,352.11

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