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Finding the Fourth Proportional to 74,978.40, 103,470.62 and 40,986.96

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Solution

The fourth proportional to 74,978.40, 103,470.62 and 40,986.96 is: 56,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,978.40 : 103,470.62 = 40,986.96 : x
  2. Step 2: Convert to fraction form
    74,978.40/103,470.62 = 40,986.96/x
  3. Step 3: Cross multiply
    74,978.40x = 103,470.62 × 40,986.96
  4. Step 4: Simplify right side
    74,978.40x = 4,240,946,163.12
  5. Step 5: Solve for x
    x = 4,240,946,163.12/74,978.40
  6. Step 6: Final answer
    x = 56,562.24

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