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Finding the Fourth Proportional to 211,595.28, 317,517.06 and 78,567.90

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Solution

The fourth proportional to 211,595.28, 317,517.06 and 78,567.90 is: 117,897.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,595.28 : 317,517.06 = 78,567.90 : x
  2. Step 2: Convert to fraction form
    211,595.28/317,517.06 = 78,567.90/x
  3. Step 3: Cross multiply
    211,595.28x = 317,517.06 × 78,567.90
  4. Step 4: Simplify right side
    211,595.28x = 24,946,648,618.37
  5. Step 5: Solve for x
    x = 24,946,648,618.37/211,595.28
  6. Step 6: Final answer
    x = 117,897.94

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