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Finding the Fourth Proportional to 81,458.92, 122,205.23 and 39,368.29

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Solution

The fourth proportional to 81,458.92, 122,205.23 and 39,368.29 is: 59,060.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,458.92 : 122,205.23 = 39,368.29 : x
  2. Step 2: Convert to fraction form
    81,458.92/122,205.23 = 39,368.29/x
  3. Step 3: Cross multiply
    81,458.92x = 122,205.23 × 39,368.29
  4. Step 4: Simplify right side
    81,458.92x = 4,811,010,934.16
  5. Step 5: Solve for x
    x = 4,811,010,934.16/81,458.92
  6. Step 6: Final answer
    x = 59,060.58

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