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Finding the Fourth Proportional to 109,591.20, 164,386.80 and 69,933.60

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Solution

The fourth proportional to 109,591.20, 164,386.80 and 69,933.60 is: 104,900.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,591.20 : 164,386.80 = 69,933.60 : x
  2. Step 2: Convert to fraction form
    109,591.20/164,386.80 = 69,933.60/x
  3. Step 3: Cross multiply
    109,591.20x = 164,386.80 × 69,933.60
  4. Step 4: Simplify right side
    109,591.20x = 11,496,160,716.48
  5. Step 5: Solve for x
    x = 11,496,160,716.48/109,591.20
  6. Step 6: Final answer
    x = 104,900.40

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