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Finding the Fourth Proportional to 74,978.60, 103,471.43 and 40,986.54

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Solution

The fourth proportional to 74,978.60, 103,471.43 and 40,986.54 is: 56,561.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,978.60 : 103,471.43 = 40,986.54 : x
  2. Step 2: Convert to fraction form
    74,978.60/103,471.43 = 40,986.54/x
  3. Step 3: Cross multiply
    74,978.60x = 103,471.43 × 40,986.54
  4. Step 4: Simplify right side
    74,978.60x = 4,240,935,699.62
  5. Step 5: Solve for x
    x = 4,240,935,699.62/74,978.60
  6. Step 6: Final answer
    x = 56,561.95

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