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Finding the Fourth Proportional to 78,086.56, 117,074.16 and 36,510.88

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Solution

The fourth proportional to 78,086.56, 117,074.16 and 36,510.88 is: 54,740.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,086.56 : 117,074.16 = 36,510.88 : x
  2. Step 2: Convert to fraction form
    78,086.56/117,074.16 = 36,510.88/x
  3. Step 3: Cross multiply
    78,086.56x = 117,074.16 × 36,510.88
  4. Step 4: Simplify right side
    78,086.56x = 4,274,480,606.86
  5. Step 5: Solve for x
    x = 4,274,480,606.86/78,086.56
  6. Step 6: Final answer
    x = 54,740.29

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