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Finding the Fourth Proportional to 85,856.58, 118,488.96 and 47,619.90

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Solution

The fourth proportional to 85,856.58, 118,488.96 and 47,619.90 is: 65,719.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.58 : 118,488.96 = 47,619.90 : x
  2. Step 2: Convert to fraction form
    85,856.58/118,488.96 = 47,619.90/x
  3. Step 3: Cross multiply
    85,856.58x = 118,488.96 × 47,619.90
  4. Step 4: Simplify right side
    85,856.58x = 5,642,432,426.30
  5. Step 5: Solve for x
    x = 5,642,432,426.30/85,856.58
  6. Step 6: Final answer
    x = 65,719.28

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