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Finding the Fourth Proportional to 61,986.40, 92,978.76 and 15,239.68

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Solution

The fourth proportional to 61,986.40, 92,978.76 and 15,239.68 is: 22,859.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,986.40 : 92,978.76 = 15,239.68 : x
  2. Step 2: Convert to fraction form
    61,986.40/92,978.76 = 15,239.68/x
  3. Step 3: Cross multiply
    61,986.40x = 92,978.76 × 15,239.68
  4. Step 4: Simplify right side
    61,986.40x = 1,416,966,549.20
  5. Step 5: Solve for x
    x = 1,416,966,549.20/61,986.40
  6. Step 6: Final answer
    x = 22,859.31

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