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Finding the Fourth Proportional to 99,057.21, 136,800.30 and 92,709.43

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Solution

The fourth proportional to 99,057.21, 136,800.30 and 92,709.43 is: 128,033.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,057.21 : 136,800.30 = 92,709.43 : x
  2. Step 2: Convert to fraction form
    99,057.21/136,800.30 = 92,709.43/x
  3. Step 3: Cross multiply
    99,057.21x = 136,800.30 × 92,709.43
  4. Step 4: Simplify right side
    99,057.21x = 12,682,677,836.83
  5. Step 5: Solve for x
    x = 12,682,677,836.83/99,057.21
  6. Step 6: Final answer
    x = 128,033.87

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