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Finding the Fourth Proportional to 91,856.80, 137,785.20 and 58,614.40

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Solution

The fourth proportional to 91,856.80, 137,785.20 and 58,614.40 is: 87,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,856.80 : 137,785.20 = 58,614.40 : x
  2. Step 2: Convert to fraction form
    91,856.80/137,785.20 = 58,614.40/x
  3. Step 3: Cross multiply
    91,856.80x = 137,785.20 × 58,614.40
  4. Step 4: Simplify right side
    91,856.80x = 8,076,196,826.88
  5. Step 5: Solve for x
    x = 8,076,196,826.88/91,856.80
  6. Step 6: Final answer
    x = 87,921.60

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