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Finding the Fourth Proportional to 86,321.60, 129,484.32 and 23,991.68

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Solution

The fourth proportional to 86,321.60, 129,484.32 and 23,991.68 is: 35,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,321.60 : 129,484.32 = 23,991.68 : x
  2. Step 2: Convert to fraction form
    86,321.60/129,484.32 = 23,991.68/x
  3. Step 3: Cross multiply
    86,321.60x = 129,484.32 × 23,991.68
  4. Step 4: Simplify right side
    86,321.60x = 3,106,546,370.46
  5. Step 5: Solve for x
    x = 3,106,546,370.46/86,321.60
  6. Step 6: Final answer
    x = 35,988.05

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