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Finding the Fourth Proportional to 96,906.40, 145,273.20 and 57,421.60

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Solution

The fourth proportional to 96,906.40, 145,273.20 and 57,421.60 is: 86,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,906.40 : 145,273.20 = 57,421.60 : x
  2. Step 2: Convert to fraction form
    96,906.40/145,273.20 = 57,421.60/x
  3. Step 3: Cross multiply
    96,906.40x = 145,273.20 × 57,421.60
  4. Step 4: Simplify right side
    96,906.40x = 8,341,819,581.12
  5. Step 5: Solve for x
    x = 8,341,819,581.12/96,906.40
  6. Step 6: Final answer
    x = 86,081.20

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