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Finding the Fourth Proportional to 191,591.20, 287,386.80 and 73,266.40

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Solution

The fourth proportional to 191,591.20, 287,386.80 and 73,266.40 is: 109,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,591.20 : 287,386.80 = 73,266.40 : x
  2. Step 2: Convert to fraction form
    191,591.20/287,386.80 = 73,266.40/x
  3. Step 3: Cross multiply
    191,591.20x = 287,386.80 × 73,266.40
  4. Step 4: Simplify right side
    191,591.20x = 21,055,796,243.52
  5. Step 5: Solve for x
    x = 21,055,796,243.52/191,591.20
  6. Step 6: Final answer
    x = 109,899.60

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