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Finding the Fourth Proportional to 129,690.72, 194,587.92 and 70,457.04

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Solution

The fourth proportional to 129,690.72, 194,587.92 and 70,457.04 is: 105,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,690.72 : 194,587.92 = 70,457.04 : x
  2. Step 2: Convert to fraction form
    129,690.72/194,587.92 = 70,457.04/x
  3. Step 3: Cross multiply
    129,690.72x = 194,587.92 × 70,457.04
  4. Step 4: Simplify right side
    129,690.72x = 13,710,088,862.96
  5. Step 5: Solve for x
    x = 13,710,088,862.96/129,690.72
  6. Step 6: Final answer
    x = 105,713.72

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