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Finding the Fourth Proportional to 79,621.12, 109,881.80 and 45,640.14

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Solution

The fourth proportional to 79,621.12, 109,881.80 and 45,640.14 is: 62,986.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,621.12 : 109,881.80 = 45,640.14 : x
  2. Step 2: Convert to fraction form
    79,621.12/109,881.80 = 45,640.14/x
  3. Step 3: Cross multiply
    79,621.12x = 109,881.80 × 45,640.14
  4. Step 4: Simplify right side
    79,621.12x = 5,015,020,735.45
  5. Step 5: Solve for x
    x = 5,015,020,735.45/79,621.12
  6. Step 6: Final answer
    x = 62,986.06

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