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Finding the Fourth Proportional to 72,256.80, 108,190.80 and 56,575.20

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Solution

The fourth proportional to 72,256.80, 108,190.80 and 56,575.20 is: 84,710.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,256.80 : 108,190.80 = 56,575.20 : x
  2. Step 2: Convert to fraction form
    72,256.80/108,190.80 = 56,575.20/x
  3. Step 3: Cross multiply
    72,256.80x = 108,190.80 × 56,575.20
  4. Step 4: Simplify right side
    72,256.80x = 6,120,916,148.16
  5. Step 5: Solve for x
    x = 6,120,916,148.16/72,256.80
  6. Step 6: Final answer
    x = 84,710.59

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