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Finding the Fourth Proportional to 102,419.48, 141,258.76 and 66,620.92

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Solution

The fourth proportional to 102,419.48, 141,258.76 and 66,620.92 is: 91,884.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,419.48 : 141,258.76 = 66,620.92 : x
  2. Step 2: Convert to fraction form
    102,419.48/141,258.76 = 66,620.92/x
  3. Step 3: Cross multiply
    102,419.48x = 141,258.76 × 66,620.92
  4. Step 4: Simplify right side
    102,419.48x = 9,410,788,549.26
  5. Step 5: Solve for x
    x = 9,410,788,549.26/102,419.48
  6. Step 6: Final answer
    x = 91,884.75

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