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Finding the Fourth Proportional to 85,903.80, 128,904.30 and 59,627.40

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Solution

The fourth proportional to 85,903.80, 128,904.30 and 59,627.40 is: 89,474.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,903.80 : 128,904.30 = 59,627.40 : x
  2. Step 2: Convert to fraction form
    85,903.80/128,904.30 = 59,627.40/x
  3. Step 3: Cross multiply
    85,903.80x = 128,904.30 × 59,627.40
  4. Step 4: Simplify right side
    85,903.80x = 7,686,228,257.82
  5. Step 5: Solve for x
    x = 7,686,228,257.82/85,903.80
  6. Step 6: Final answer
    x = 89,474.83

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