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Finding the Fourth Proportional to 42,488.78, 63,686.39 and 17,515.13

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Solution

The fourth proportional to 42,488.78, 63,686.39 and 17,515.13 is: 26,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,488.78 : 63,686.39 = 17,515.13 : x
  2. Step 2: Convert to fraction form
    42,488.78/63,686.39 = 17,515.13/x
  3. Step 3: Cross multiply
    42,488.78x = 63,686.39 × 17,515.13
  4. Step 4: Simplify right side
    42,488.78x = 1,115,474,994.07
  5. Step 5: Solve for x
    x = 1,115,474,994.07/42,488.78
  6. Step 6: Final answer
    x = 26,253.40

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