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Finding the Fourth Proportional to 76,815.84, 115,187.04 and 39,393.84

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Solution

The fourth proportional to 76,815.84, 115,187.04 and 39,393.84 is: 59,071.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815.84 : 115,187.04 = 39,393.84 : x
  2. Step 2: Convert to fraction form
    76,815.84/115,187.04 = 39,393.84/x
  3. Step 3: Cross multiply
    76,815.84x = 115,187.04 × 39,393.84
  4. Step 4: Simplify right side
    76,815.84x = 4,537,659,823.83
  5. Step 5: Solve for x
    x = 4,537,659,823.83/76,815.84
  6. Step 6: Final answer
    x = 59,071.93

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