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Finding the Fourth Proportional to 118,779.62, 178,195.37 and 39,891.78

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Solution

The fourth proportional to 118,779.62, 178,195.37 and 39,891.78 is: 59,846.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,779.62 : 178,195.37 = 39,891.78 : x
  2. Step 2: Convert to fraction form
    118,779.62/178,195.37 = 39,891.78/x
  3. Step 3: Cross multiply
    118,779.62x = 178,195.37 × 39,891.78
  4. Step 4: Simplify right side
    118,779.62x = 7,108,530,297.60
  5. Step 5: Solve for x
    x = 7,108,530,297.60/118,779.62
  6. Step 6: Final answer
    x = 59,846.38

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