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Finding the Fourth Proportional to 105,902.88, 146,022.50 and 78,998.68

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Solution

The fourth proportional to 105,902.88, 146,022.50 and 78,998.68 is: 108,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,902.88 : 146,022.50 = 78,998.68 : x
  2. Step 2: Convert to fraction form
    105,902.88/146,022.50 = 78,998.68/x
  3. Step 3: Cross multiply
    105,902.88x = 146,022.50 × 78,998.68
  4. Step 4: Simplify right side
    105,902.88x = 11,535,584,750.30
  5. Step 5: Solve for x
    x = 11,535,584,750.30/105,902.88
  6. Step 6: Final answer
    x = 108,926.07

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