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Finding the Fourth Proportional to 73,221.80, 109,707.30 and 39,965.19

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Solution

The fourth proportional to 73,221.80, 109,707.30 and 39,965.19 is: 59,879.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,221.80 : 109,707.30 = 39,965.19 : x
  2. Step 2: Convert to fraction form
    73,221.80/109,707.30 = 39,965.19/x
  3. Step 3: Cross multiply
    73,221.80x = 109,707.30 × 39,965.19
  4. Step 4: Simplify right side
    73,221.80x = 4,384,473,088.89
  5. Step 5: Solve for x
    x = 4,384,473,088.89/73,221.80
  6. Step 6: Final answer
    x = 59,879.34

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