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Finding the Fourth Proportional to 78,440.78, 108,249.00 and 42,630.89

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Solution

The fourth proportional to 78,440.78, 108,249.00 and 42,630.89 is: 58,831.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,440.78 : 108,249.00 = 42,630.89 : x
  2. Step 2: Convert to fraction form
    78,440.78/108,249.00 = 42,630.89/x
  3. Step 3: Cross multiply
    78,440.78x = 108,249.00 × 42,630.89
  4. Step 4: Simplify right side
    78,440.78x = 4,614,750,510.50
  5. Step 5: Solve for x
    x = 4,614,750,510.50/78,440.78
  6. Step 6: Final answer
    x = 58,831.01

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