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Finding the Fourth Proportional to 74,740.46, 103,137.72 and 42,907.28

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Solution

The fourth proportional to 74,740.46, 103,137.72 and 42,907.28 is: 59,209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,740.46 : 103,137.72 = 42,907.28 : x
  2. Step 2: Convert to fraction form
    74,740.46/103,137.72 = 42,907.28/x
  3. Step 3: Cross multiply
    74,740.46x = 103,137.72 × 42,907.28
  4. Step 4: Simplify right side
    74,740.46x = 4,425,359,030.60
  5. Step 5: Solve for x
    x = 4,425,359,030.60/74,740.46
  6. Step 6: Final answer
    x = 59,209.68

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