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Finding the Fourth Proportional to 52,721.46, 79,111.44 and 21,578.58

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Solution

The fourth proportional to 52,721.46, 79,111.44 and 21,578.58 is: 32,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,721.46 : 79,111.44 = 21,578.58 : x
  2. Step 2: Convert to fraction form
    52,721.46/79,111.44 = 21,578.58/x
  3. Step 3: Cross multiply
    52,721.46x = 79,111.44 × 21,578.58
  4. Step 4: Simplify right side
    52,721.46x = 1,707,112,536.96
  5. Step 5: Solve for x
    x = 1,707,112,536.96/52,721.46
  6. Step 6: Final answer
    x = 32,379.84

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