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Finding the Fourth Proportional to 259,054.29, 388,616.79 and 90,535.51

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Solution

The fourth proportional to 259,054.29, 388,616.79 and 90,535.51 is: 135,815.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,054.29 : 388,616.79 = 90,535.51 : x
  2. Step 2: Convert to fraction form
    259,054.29/388,616.79 = 90,535.51/x
  3. Step 3: Cross multiply
    259,054.29x = 388,616.79 × 90,535.51
  4. Step 4: Simplify right side
    259,054.29x = 35,183,619,277.21
  5. Step 5: Solve for x
    x = 35,183,619,277.21/259,054.29
  6. Step 6: Final answer
    x = 135,815.62

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