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Finding the Fourth Proportional to 129,652.86, 178,970.16 and 87,236.04

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Solution

The fourth proportional to 129,652.86, 178,970.16 and 87,236.04 is: 120,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,652.86 : 178,970.16 = 87,236.04 : x
  2. Step 2: Convert to fraction form
    129,652.86/178,970.16 = 87,236.04/x
  3. Step 3: Cross multiply
    129,652.86x = 178,970.16 × 87,236.04
  4. Step 4: Simplify right side
    129,652.86x = 15,612,648,036.57
  5. Step 5: Solve for x
    x = 15,612,648,036.57/129,652.86
  6. Step 6: Final answer
    x = 120,418.85

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