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Finding the Fourth Proportional to 99,471.92, 149,212.84 and 28,405.10

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Solution

The fourth proportional to 99,471.92, 149,212.84 and 28,405.10 is: 42,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,471.92 : 149,212.84 = 28,405.10 : x
  2. Step 2: Convert to fraction form
    99,471.92/149,212.84 = 28,405.10/x
  3. Step 3: Cross multiply
    99,471.92x = 149,212.84 × 28,405.10
  4. Step 4: Simplify right side
    99,471.92x = 4,238,405,641.48
  5. Step 5: Solve for x
    x = 4,238,405,641.48/99,471.92
  6. Step 6: Final answer
    x = 42,609.07

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