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Finding the Fourth Proportional to 75,942.96, 113,919.92 and 21,905.40

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Solution

The fourth proportional to 75,942.96, 113,919.92 and 21,905.40 is: 32,859.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,942.96 : 113,919.92 = 21,905.40 : x
  2. Step 2: Convert to fraction form
    75,942.96/113,919.92 = 21,905.40/x
  3. Step 3: Cross multiply
    75,942.96x = 113,919.92 × 21,905.40
  4. Step 4: Simplify right side
    75,942.96x = 2,495,461,415.57
  5. Step 5: Solve for x
    x = 2,495,461,415.57/75,942.96
  6. Step 6: Final answer
    x = 32,859.68

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