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Finding the Fourth Proportional to 345,720.63, 518,668.42 and 96,402.63

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Solution

The fourth proportional to 345,720.63, 518,668.42 and 96,402.63 is: 144,628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,720.63 : 518,668.42 = 96,402.63 : x
  2. Step 2: Convert to fraction form
    345,720.63/518,668.42 = 96,402.63/x
  3. Step 3: Cross multiply
    345,720.63x = 518,668.42 × 96,402.63
  4. Step 4: Simplify right side
    345,720.63x = 50,000,999,785.94
  5. Step 5: Solve for x
    x = 50,000,999,785.94/345,720.63
  6. Step 6: Final answer
    x = 144,628.34

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