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Finding the Fourth Proportional to 266,540.59, 399,751.92 and 76,959.81

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Solution

The fourth proportional to 266,540.59, 399,751.92 and 76,959.81 is: 115,422.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,540.59 : 399,751.92 = 76,959.81 : x
  2. Step 2: Convert to fraction form
    266,540.59/399,751.92 = 76,959.81/x
  3. Step 3: Cross multiply
    266,540.59x = 399,751.92 × 76,959.81
  4. Step 4: Simplify right side
    266,540.59x = 30,764,831,810.34
  5. Step 5: Solve for x
    x = 30,764,831,810.34/266,540.59
  6. Step 6: Final answer
    x = 115,422.69

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