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Finding the Fourth Proportional to 66,129.64, 99,194.43 and 16,881.64

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Solution

The fourth proportional to 66,129.64, 99,194.43 and 16,881.64 is: 25,322.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,129.64 : 99,194.43 = 16,881.64 : x
  2. Step 2: Convert to fraction form
    66,129.64/99,194.43 = 16,881.64/x
  3. Step 3: Cross multiply
    66,129.64x = 99,194.43 × 16,881.64
  4. Step 4: Simplify right side
    66,129.64x = 1,674,564,657.27
  5. Step 5: Solve for x
    x = 1,674,564,657.27/66,129.64
  6. Step 6: Final answer
    x = 25,322.45

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