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Finding the Fourth Proportional to 104,428.40, 156,691.20 and 54,564.80

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Solution

The fourth proportional to 104,428.40, 156,691.20 and 54,564.80 is: 81,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,428.40 : 156,691.20 = 54,564.80 : x
  2. Step 2: Convert to fraction form
    104,428.40/156,691.20 = 54,564.80/x
  3. Step 3: Cross multiply
    104,428.40x = 156,691.20 × 54,564.80
  4. Step 4: Simplify right side
    104,428.40x = 8,549,823,989.76
  5. Step 5: Solve for x
    x = 8,549,823,989.76/104,428.40
  6. Step 6: Final answer
    x = 81,872.59

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