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Finding the Fourth Proportional to 129,264.88, 178,312.69 and 77,568.61

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Solution

The fourth proportional to 129,264.88, 178,312.69 and 77,568.61 is: 107,000.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,264.88 : 178,312.69 = 77,568.61 : x
  2. Step 2: Convert to fraction form
    129,264.88/178,312.69 = 77,568.61/x
  3. Step 3: Cross multiply
    129,264.88x = 178,312.69 × 77,568.61
  4. Step 4: Simplify right side
    129,264.88x = 13,831,467,508.66
  5. Step 5: Solve for x
    x = 13,831,467,508.66/129,264.88
  6. Step 6: Final answer
    x = 107,000.97

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