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Finding the Fourth Proportional to 74,666.40, 112,129.20 and 39,674.40

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Solution

The fourth proportional to 74,666.40, 112,129.20 and 39,674.40 is: 59,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,666.40 : 112,129.20 = 39,674.40 : x
  2. Step 2: Convert to fraction form
    74,666.40/112,129.20 = 39,674.40/x
  3. Step 3: Cross multiply
    74,666.40x = 112,129.20 × 39,674.40
  4. Step 4: Simplify right side
    74,666.40x = 4,448,658,732.48
  5. Step 5: Solve for x
    x = 4,448,658,732.48/74,666.40
  6. Step 6: Final answer
    x = 59,580.46

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