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Finding the Fourth Proportional to 103,894.42, 143,445.45 and 66,219.70

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Solution

The fourth proportional to 103,894.42, 143,445.45 and 66,219.70 is: 91,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,894.42 : 143,445.45 = 66,219.70 : x
  2. Step 2: Convert to fraction form
    103,894.42/143,445.45 = 66,219.70/x
  3. Step 3: Cross multiply
    103,894.42x = 143,445.45 × 66,219.70
  4. Step 4: Simplify right side
    103,894.42x = 9,498,914,665.37
  5. Step 5: Solve for x
    x = 9,498,914,665.37/103,894.42
  6. Step 6: Final answer
    x = 91,428.54

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