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Finding the Fourth Proportional to 66,074.78, 99,112.98 and 19,328.60

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Solution

The fourth proportional to 66,074.78, 99,112.98 and 19,328.60 is: 28,993.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,074.78 : 99,112.98 = 19,328.60 : x
  2. Step 2: Convert to fraction form
    66,074.78/99,112.98 = 19,328.60/x
  3. Step 3: Cross multiply
    66,074.78x = 99,112.98 × 19,328.60
  4. Step 4: Simplify right side
    66,074.78x = 1,915,715,145.23
  5. Step 5: Solve for x
    x = 1,915,715,145.23/66,074.78
  6. Step 6: Final answer
    x = 28,993.14

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