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Finding the Fourth Proportional to 196,578.28, 294,886.56 and 78,221.96

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Solution

The fourth proportional to 196,578.28, 294,886.56 and 78,221.96 is: 117,340.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,578.28 : 294,886.56 = 78,221.96 : x
  2. Step 2: Convert to fraction form
    196,578.28/294,886.56 = 78,221.96/x
  3. Step 3: Cross multiply
    196,578.28x = 294,886.56 × 78,221.96
  4. Step 4: Simplify right side
    196,578.28x = 23,066,604,700.86
  5. Step 5: Solve for x
    x = 23,066,604,700.86/196,578.28
  6. Step 6: Final answer
    x = 117,340.56

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