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Finding the Fourth Proportional to 86,428.19, 119,270.90 and 48,703.79

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Solution

The fourth proportional to 86,428.19, 119,270.90 and 48,703.79 is: 67,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,428.19 : 119,270.90 = 48,703.79 : x
  2. Step 2: Convert to fraction form
    86,428.19/119,270.90 = 48,703.79/x
  3. Step 3: Cross multiply
    86,428.19x = 119,270.90 × 48,703.79
  4. Step 4: Simplify right side
    86,428.19x = 5,808,944,866.71
  5. Step 5: Solve for x
    x = 5,808,944,866.71/86,428.19
  6. Step 6: Final answer
    x = 67,211.23

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