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Finding the Fourth Proportional to 286,916, 430,443.12 and 89,924

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Solution

The fourth proportional to 286,916, 430,443.12 and 89,924 is: 134,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,916 : 430,443.12 = 89,924 : x
  2. Step 2: Convert to fraction form
    286,916/430,443.12 = 89,924/x
  3. Step 3: Cross multiply
    286,916x = 430,443.12 × 89,924
  4. Step 4: Simplify right side
    286,916x = 38,707,167,122.88
  5. Step 5: Solve for x
    x = 38,707,167,122.88/286,916
  6. Step 6: Final answer
    x = 134,907.66

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