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Finding the Fourth Proportional to 123,765.90, 170,874.27 and 85,070.34

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Solution

The fourth proportional to 123,765.90, 170,874.27 and 85,070.34 is: 117,450.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,765.90 : 170,874.27 = 85,070.34 : x
  2. Step 2: Convert to fraction form
    123,765.90/170,874.27 = 85,070.34/x
  3. Step 3: Cross multiply
    123,765.90x = 170,874.27 × 85,070.34
  4. Step 4: Simplify right side
    123,765.90x = 14,536,332,246.15
  5. Step 5: Solve for x
    x = 14,536,332,246.15/123,765.90
  6. Step 6: Final answer
    x = 117,450.22

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