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Finding the Fourth Proportional to 72,438.75, 99,965.84 and 42,245.01

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Solution

The fourth proportional to 72,438.75, 99,965.84 and 42,245.01 is: 58,298.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438.75 : 99,965.84 = 42,245.01 : x
  2. Step 2: Convert to fraction form
    72,438.75/99,965.84 = 42,245.01/x
  3. Step 3: Cross multiply
    72,438.75x = 99,965.84 × 42,245.01
  4. Step 4: Simplify right side
    72,438.75x = 4,223,057,910.46
  5. Step 5: Solve for x
    x = 4,223,057,910.46/72,438.75
  6. Step 6: Final answer
    x = 58,298.33

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