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Finding the Fourth Proportional to 98,922.78, 136,523.21 and 56,487.69

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Solution

The fourth proportional to 98,922.78, 136,523.21 and 56,487.69 is: 77,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,922.78 : 136,523.21 = 56,487.69 : x
  2. Step 2: Convert to fraction form
    98,922.78/136,523.21 = 56,487.69/x
  3. Step 3: Cross multiply
    98,922.78x = 136,523.21 × 56,487.69
  4. Step 4: Simplify right side
    98,922.78x = 7,711,880,481.85
  5. Step 5: Solve for x
    x = 7,711,880,481.85/98,922.78
  6. Step 6: Final answer
    x = 77,958.59

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