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Finding the Fourth Proportional to 129,642, 194,463 and 31,146

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Solution

The fourth proportional to 129,642, 194,463 and 31,146 is: 46,719

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,642 : 194,463 = 31,146 : x
  2. Step 2: Convert to fraction form
    129,642/194,463 = 31,146/x
  3. Step 3: Cross multiply
    129,642x = 194,463 × 31,146
  4. Step 4: Simplify right side
    129,642x = 6,056,744,598
  5. Step 5: Solve for x
    x = 6,056,744,598/129,642
  6. Step 6: Final answer
    x = 46,719

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