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Finding the Fourth Proportional to 288,104.95, 432,157.43 and 77,742.55

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Solution

The fourth proportional to 288,104.95, 432,157.43 and 77,742.55 is: 116,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,104.95 : 432,157.43 = 77,742.55 : x
  2. Step 2: Convert to fraction form
    288,104.95/432,157.43 = 77,742.55/x
  3. Step 3: Cross multiply
    288,104.95x = 432,157.43 × 77,742.55
  4. Step 4: Simplify right side
    288,104.95x = 33,597,020,609.65
  5. Step 5: Solve for x
    x = 33,597,020,609.65/288,104.95
  6. Step 6: Final answer
    x = 116,613.83

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