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Finding the Fourth Proportional to 77,031.40, 106,244.68 and 66,294.16

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Solution

The fourth proportional to 77,031.40, 106,244.68 and 66,294.16 is: 91,435.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,031.40 : 106,244.68 = 66,294.16 : x
  2. Step 2: Convert to fraction form
    77,031.40/106,244.68 = 66,294.16/x
  3. Step 3: Cross multiply
    77,031.40x = 106,244.68 × 66,294.16
  4. Step 4: Simplify right side
    77,031.40x = 7,043,401,815.07
  5. Step 5: Solve for x
    x = 7,043,401,815.07/77,031.40
  6. Step 6: Final answer
    x = 91,435.46

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