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Finding the Fourth Proportional to 90,859.78, 136,317.60 and 46,517.66

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Solution

The fourth proportional to 90,859.78, 136,317.60 and 46,517.66 is: 69,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,859.78 : 136,317.60 = 46,517.66 : x
  2. Step 2: Convert to fraction form
    90,859.78/136,317.60 = 46,517.66/x
  3. Step 3: Cross multiply
    90,859.78x = 136,317.60 × 46,517.66
  4. Step 4: Simplify right side
    90,859.78x = 6,341,175,768.82
  5. Step 5: Solve for x
    x = 6,341,175,768.82/90,859.78
  6. Step 6: Final answer
    x = 69,790.79

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