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Finding the Fourth Proportional to 129,497.76, 178,720.56 and 75,800.16

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Solution

The fourth proportional to 129,497.76, 178,720.56 and 75,800.16 is: 104,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,497.76 : 178,720.56 = 75,800.16 : x
  2. Step 2: Convert to fraction form
    129,497.76/178,720.56 = 75,800.16/x
  3. Step 3: Cross multiply
    129,497.76x = 178,720.56 × 75,800.16
  4. Step 4: Simplify right side
    129,497.76x = 13,547,047,043.29
  5. Step 5: Solve for x
    x = 13,547,047,043.29/129,497.76
  6. Step 6: Final answer
    x = 104,612.21

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