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Finding the Fourth Proportional to 111,978.66, 154,530.54 and 61,677.66

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Solution

The fourth proportional to 111,978.66, 154,530.54 and 61,677.66 is: 85,115.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,978.66 : 154,530.54 = 61,677.66 : x
  2. Step 2: Convert to fraction form
    111,978.66/154,530.54 = 61,677.66/x
  3. Step 3: Cross multiply
    111,978.66x = 154,530.54 × 61,677.66
  4. Step 4: Simplify right side
    111,978.66x = 9,531,082,105.74
  5. Step 5: Solve for x
    x = 9,531,082,105.74/111,978.66
  6. Step 6: Final answer
    x = 85,115.16

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