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Finding the Fourth Proportional to 99,728.80, 149,518.80 and 60,277.60

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Solution

The fourth proportional to 99,728.80, 149,518.80 and 60,277.60 is: 90,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,728.80 : 149,518.80 = 60,277.60 : x
  2. Step 2: Convert to fraction form
    99,728.80/149,518.80 = 60,277.60/x
  3. Step 3: Cross multiply
    99,728.80x = 149,518.80 × 60,277.60
  4. Step 4: Simplify right side
    99,728.80x = 9,012,634,418.88
  5. Step 5: Solve for x
    x = 9,012,634,418.88/99,728.80
  6. Step 6: Final answer
    x = 90,371.43

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