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Finding the Fourth Proportional to 101,931.46, 140,686.12 and 58,912.80

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Solution

The fourth proportional to 101,931.46, 140,686.12 and 58,912.80 is: 81,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,931.46 : 140,686.12 = 58,912.80 : x
  2. Step 2: Convert to fraction form
    101,931.46/140,686.12 = 58,912.80/x
  3. Step 3: Cross multiply
    101,931.46x = 140,686.12 × 58,912.80
  4. Step 4: Simplify right side
    101,931.46x = 8,288,213,250.34
  5. Step 5: Solve for x
    x = 8,288,213,250.34/101,931.46
  6. Step 6: Final answer
    x = 81,311.63

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