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Finding the Fourth Proportional to 158,457.28, 218,671.81 and 85,860.15

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Solution

The fourth proportional to 158,457.28, 218,671.81 and 85,860.15 is: 118,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,457.28 : 218,671.81 = 85,860.15 : x
  2. Step 2: Convert to fraction form
    158,457.28/218,671.81 = 85,860.15/x
  3. Step 3: Cross multiply
    158,457.28x = 218,671.81 × 85,860.15
  4. Step 4: Simplify right side
    158,457.28x = 18,775,193,978.07
  5. Step 5: Solve for x
    x = 18,775,193,978.07/158,457.28
  6. Step 6: Final answer
    x = 118,487.42

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