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Finding the Fourth Proportional to 286,428.23, 429,722.78 and 84,029.11

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Solution

The fourth proportional to 286,428.23, 429,722.78 and 84,029.11 is: 126,067.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,428.23 : 429,722.78 = 84,029.11 : x
  2. Step 2: Convert to fraction form
    286,428.23/429,722.78 = 84,029.11/x
  3. Step 3: Cross multiply
    286,428.23x = 429,722.78 × 84,029.11
  4. Step 4: Simplify right side
    286,428.23x = 36,109,221,885.89
  5. Step 5: Solve for x
    x = 36,109,221,885.89/286,428.23
  6. Step 6: Final answer
    x = 126,067.26

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